Thanks to a wide variety of things to do and places to see, Boulder is arguably one of the best weekend getaways in Colorado—if not the whole Western United States! This college town (home to University of Colorado Boulder) has it all: hike the Flatirons or Chautauqua Park in the morning, tour the Celestial Seasonings Tea Factory and Leanin’ Tree gallery in the afternoon, and then head to Pearl Street for shopping, drinking, and dining at night—and get around on the Boulder Creek Path in between. A Boulder bike tour helps you fit in even more sightseeing, perfect for a quick itinerary.

The Experience: If Aspen isn't quite your mountain town scene, head to Vail instead. It's equally as idyllic (it was modeled after European mountain resorts), pedestrian-friendly, and lovely, but the town itself is more of a square in a village with a small collection of boutiques and restaurants for visitors. Ride up and down the gondolas for mountain views in every direction and ski the unique back bowls. It's also closer to Denver, making it easier to get to and, therefore, a little more crowded during peak seasons.
Basking in your newlywed glow, discover a luxurious ski in/ski out mountain retreat with resort amenities, tucked away on a quiet mountainside in exclusive Bachelor Gulch. Beautiful woodwork gives this residence an elegant alpine lodge ambiance. Design features include stately vaulted ceilings, natural log walls, hardwood floors, and a floor-to-ceiling stone fireplace. Relax on the leather sofas around the fireplace, and even cook an intimate meal in the impressive chef’s kitchen, which features granite countertops, stainless steel appliances, and a spacious island. Enjoy the rustic charm of the Colorado mountains in every hand-selected detail from the light fixtures to its eight cowhide chairs. Located between Beaver Creek and Arrowhead, honeymooners can take advantage of Bachelor Gulch’s natural beauty, fine dining, arts, and culture. And while you’re here, enjoy complimentary access to the coveted Ritz-Carlton Bachelor Gulch guest amenities. These include a 21,000-square-foot spa, hot and cold plunge pools, and co-ed grottos with steam rooms and saunas, perfect for unwinding after your once-in-a-lifetime wedding celebration.

Tucked away in the Rocky Mountains in Idaho Springs, the Silver Lake Lodge is a cozy log cabin-style lodge that offers a relaxing and luxurious mountain retreat. Artfully blending rustic luxury with warm Colorado hospitality, the lodge boasts plush guest rooms with private bathrooms, modern amenities, and delicious, home-cooked cuisine. Guests can choose from a variety of retreats that cater to different size groups, from romantic one-bedroom cabins to family-sized lodges.
In Indiana, house rentals are the most common accommodation option. Additionally, house rentals in this destination have a median price $307 a night as well as an average size of 2,110 ft². Moreover, these rentals are optimal if you're going in a group of 7, it represents the average number of vacationers house rentals can accommodate in Indiana. Hotel rooms are the second most frequent type of accommodation in Indiana. Our data reveals that the standard price of hotel rooms is $114 a night for an area of 430 ft².

There are 14 individually decorated guestrooms, each furnished with rustic décor and modern amenities. Floor-to-ceiling natural stone fireplaces create a cozy ambiance, and handcrafted beds and lush linens beckon you to try them. Relax in the comfort of your room or enjoy a pampering in-house massage before heading out into town to enjoy an exceptional dining experience at one of the many local restaurants.
The charming town of Boulder is surrounded by dramatic scenery, including the amazing Flatirons, acres of forest and snow-capped peaks – a perfect year-round playground. You can soak up the atmosphere on historic Pearl Street before hiking deep into Flatiron territory from the Open Space Mountain Park or meander through the town along Boulder Creek Path.
With a year-round ski resort and a unique Gold Rush history behind it, Breckenridge is a fun place to visit in Colorado. One must-see while here is the Breckenridge National Historic District, which runs along Main Street and features colorful buildings from the 1800s that house shops, restaurants and galleries. Other fun things to do include hiking, skiing, a wildlife preserve, children’s museum, and more.
For an amazing view in the summertime, take the cable tramway up to the top of Prospect Mountain. Pack a picnic and prepare to capture some great photos. Although it can be a bit chilly in the lakes during the cooler months, that doesn't mean you shouldn't bring your swimsuits here---the Estes Park Aquatic Center has a heated pool so you can comfortably swim year-round. 
Alta Lakes is a pristine and secluded wilderness setting situated 30 minutes outside the charming mountain town of Telluride, Colorado.  The Observatory is nestled underneath the 13,000-foot peaks of the San Juan Mountains – it is one of only a few homes in the United States at 11,000+ feet! The backcountry cabin with charming rugged details serves as the perfect romantic mountain getaway for couples.
Garden of the Gods, a registered National Natural Landmark, is a unique landscape of jagged stone towers and fins jutting up 300 feet from the earth, and giant balanced boulders and rock piles dotting the landscape, with distant mountains completing the scene. Fifteen miles of trails, most of which are short and easy, allow you to get up close to the dramatic rock formations and wander through the surreal scenery. The park is a popular area for rock climbing, but other activities in the park include road biking in designated biking lanes, mountain biking, horseback riding, and Jeep and Segway tours.

The Cliff House at Pikes Peak is surprisingly affordable, with additional add-ons that can add a lot to your escape without breaking the bank. Add some chocolate-covered strawberries, crème brulee or an artisan cheese plate to your room for just a few dollars more. Or you can spring for a bottle or two of sparkling wine or Vista Point Chardonnay. Once you arrive, however, you’ll be blown away at the beautiful accommodations in this elegant late 1800s-style hotel with amazing mountain views, two-person spa tubs and much more. Stay at the hotel for some fine dining, venture into Manitou Springs to take in the beautiful sights or head to nearby Cripple Creek for some casino gambling.
The Oxford Club, Spa & Salon offers a full range of services, whether you are looking for a classical massage or a revitalizing facial. Head to the fitness center to work out with a Personal Trainer, practice yoga, take a spinning class or go indoor rowing. The salon at The Oxford is one of the best places in town for a haircut, blowout and highlights. The Urban Farmer Steakhouse by Sage Restaurant Group is scheduled to open in the summer of 2017. Before dinner, have drinks at the Cruise Room Martini Bar decorated in fun Art Deco style. Hotel guests receive complimentary Escalade car service within a two mile radius. Rooms start at USD $200 per night. Next read: 25 Best Things to Do in Denver and 15 Best Romantic Restaurants in Denver, one of the top Colorado destinations.
What makes a stay in an Estes Park cabin such an unforgettable experience is the stunning landscape in which the cabins are built. Not only do you have amazing views, but the cabins are incorporated in such a way that you can experience the nature right outside your front door. Estes Park offers all kinds of outdoor activities, from geocaching to rock climbing and whitewater rafting.
All rooms include large desks, 26-inch flat screen TVs, same day laundry and dry cleaning service. Stay fit by working out at the fitness center which is open 24/7. The Corner Office Restaurant + Martini Bar serves a fresh global menu and creative cocktails. The hotel is located across the street from the Denver Performing Arts Complex, a block from the Colorado Convention Center and two blocks from 16th Street Mall. Rooms start at $249 per night.
Rocky Mountain National Park is an American national park located approximately 76 mi (122 km) northwest of Denver International Airport[4] in north-central Colorado, within the Front Range of the Rocky Mountains. The park is situated between the towns of Estes Park to the east and Grand Lake to the west. The eastern and westerns slopes of the Continental Divide run directly through the center of the park with the headwaters of the Colorado River located in the park's northwestern region.[5] The main features of the park include mountains, alpine lakes and a wide variety of wildlife within various climates and environments, from wooded forests to mountain tundra.
Offering visitors a glimpse into Colorado’s rich history, Georgetown is a charming Victorian mining town nestled just west of Denver. Once the third-largest city in the state, Georgetown was built in 1884 to service the silver mines. Visitors can take a ride on the famous Georgetown Loop Railroad to Silver Plume and back, or visit the well-preserved Hotel de Paris to browse artifacts from the era. Learn how the wealthy locals used to live at the Hamill House Museum or simply browse the charming streets lined with Victorian-era homes and shops. Those who want to explore the area by car should drive along the Guanella Pass, a long stretch of road with picturesque views, before taking rest in one of the area’s many Victorian bed and breakfast inns.

More than 3,000 elk, 800 bighorn sheep and herds of mule deer and moose live in the park. For the best photography lighting and opportunities to spot massive bugling elk, head to Moraine Park just after sunrise. View bighorn sheep at Sheep Lakes May through mid-August and catch a glimpse of RMNP’s ever-elusive moose population along the Colorado River in the Kawuneeche Valley on the park's west side.
At 265,000 acres, Rocky Mountain National Park isn't the country's largest national park, nor is it the most-frequented with about 4 million annual visitors (compared to Great Smoky Mountains National Park's more than 11 million visitors). But there is something definitively magical about RMNP, which rises 12,183 feet into the Colorado sky. The main attraction is hiking its 350-some miles of trails that wind through pine and spruce forests, glittering alpine lakes, swaths of wildflowers and if you're lucky, some elk or bighorn sheep. And maybe it's the thinner atmosphere that goes to visitors' heads, but even the most jaded report feelings of awe and wonder after a day or two of breathing in that refreshing mountain air. 
The Leland House and Rochester Hotel are family-owned historic hotels with an authentic Western theme. The 14 rooms at the Rochester Hotel are themed after Westerns that were filmed in the Durango area. Each of the 12 accommodations in the Leland House is named after a historic Durangoan and is decorated with that person’s memorabilia, biographies and photos. All rooms have Wi-Fi, cable, Aveda products, complimentary gourmet breakfast and free Cruiser bike rentals. Grab a drink at the Rochester Bar which serves the hotel’s signature Rochester wine.
If you are planning a romantic trip, ask for one of the Mediterranean suites which have two-person whirlpool tubs. For the basketball players in the family, Tall Rooms with extra-long beds and heightened showerheads are also available. Panzano is a 210-seat Italian restaurant serving a selection of gourmet dishes. The hotel is located in the heart of Denver's central business district and is within easy walking distance of 16th Street Mall, lower downtown and Larimer Square. Rates start at around $115 per night.

Home to Colorado’s Vail Ski Resort, Vail is a trendy vacation town located at the base of Vail Mountain and attracts people for its skiing and snowboarding scene, as well as its dining, shopping and arts. It is also a popular summertime destination, offering golfing and hiking opportunities, along with cultural festivals. People also come her to go fly fishing at Gore Creek, which runs through the center of town.


Putting my Rocky Mountain inspired rectangles away until February, I eventually knitted up the remaining pieces and ironed the whole thing out before I framed the simple square and placed it on my beige wall. Perhaps I needed the chill of winter to remind me of the brisk breeze of that famous mountain range, maybe I briefly tired of sweater and cardigan projects, captivated instead by the simplicity of knit-purl in straight lines.
The perfect blend of a picturesque main street with 2,358 acres of incredible skiing opportunities, Breckenridge is the oldest and largest town in Colorado’s famous Summit County. Take a tour of the 12-block downtown area and window shop through its quaint Main Street shops before strapping up your boots and heading to the famous Breckenridge Ski Resort. In the summer, take the ski ride lift up to find an array of hiking trails, while biking and golf are also popular activities. Host to numerous arts events throughout the year, this Certified Colorado Creative District has exciting public art spaces throughout the area in addition to a National Repertory Orchestra and Backstage Theatre.
I am convinced Chautauqua is Colorado’s best-kept secret and I’m amazed how few locals know about its charms. Located at the base of the Flatirons in Boulder, this National Historic Landmark has rental cottages that are surrounded on three sides with open space that includes 48 miles of hiking trails and thousands of acres of natural lands begging to be explored. On weekends in June, Theatre-Hikes Colorado will take audience members on a moderate hike amidst the scenic backdrop of Boulder Open Space while scenes from “Snow White” are performed along the way. On June 29, don’t miss the Colorado Music Festival’s Young People’s Concert, which is a is a narrated work about a cartoon score being performed at a symphony concert (tickets are $8). The historic Chautauqua Dining Hall (a tradition since 1898) has recently undergone a huge overhaul and the wraparound porch offers some of the best patio dining in Colorado. If you visit on a Saturday, be sure to also visit the Boulder’s Farmer’s Market (the largest in Colorado). Not to be forgotten are Pearl Street Mall’s restaurants, shops, people-watching and Pop Jet Fountain–they never fail to entertain.
Rocky Mountain National Park’s 415 square miles encompass and protect spectacular mountain environments. Enjoy Trail Ridge Road – which crests at over 12,000 feet including many overlooks to experience the subalpine and alpine worlds – along with over 300 miles of hiking trails, wildflowers, wildlife, starry nights, and fun times. In a world of superlatives, Rocky is on top!
Central Colorado - Pikes Peak RegionNestled within majestic Rocky Mountain scenery, Cripple Creek offers fun and adventures for the entire family. Try your luck in one of our exciting casinos, check out our fascinating museums, or explore our many history-rich activities such as a ride on the CC&V Narrow Gauge Railroad or a 1,000 foot descent underground into the Mollie Kathleen Mine.
Considered the base camp for the Rocky Mountain National Park, Estes Park is less than a 2-hour drive from Denver. Located near the east entrance to the Rocky Mountain National Park, Estes Park is a quiet area surrounded by protected land. Here you’ll find pristine wilderness with a myriad of both indoor and outdoor activities, from scenic hikes and bike trails to wine tasting and spa treatments. Take the Estes Park Aerial Tramway to the top of a small peak and soak in breathtaking panoramic views of the valley and downtown area, take a walk along the Riverwalk in Downtown Estes Park or take the kids to the Estes Park Ride-A-Kart & Cascade Creek Mini-Golf.
Teachers must help build the foundation for critical thinking and challenge students instead of assigning an overload of material to memorize for 1 test and forever be forgotten. Teachers themselves must be challenged as well to continue their education and modify their teaching based on this ever changing world. Hopefully these new bonus programs and raise in salaries provides satisfaction and it sparks more rigor for the staff in Denver schools.
Breckenridge is one of the top names in Colorado getaways, but you have to see the quaint downtown surrounded by towering peaks to truly understand what makes this destination so great. Known for its premiere skiing and beautiful hiking—picture rocky trails and alpine lakes—it’s a Colorado weekend getaway that makes you want to get outside and explore. For those who are interested in cozying up while on vacation, a spa package or winery visit could do the trick.
If you want to get pampered while enjoying mountain air and views, you'll find five-star accommodations in luxury resorts near the state's famed ski areas. In the southwestern part of the state, Dunton Hot Springs 35 miles northeast of Dolores is a fully restored ghost town tucked along a wooded stream. You'll pay more than $1,000 per night to stay there, but the price includes meals, beverages, a spa treatment, guided hikes and unlimited use of the hot springs and mountain bikes. For nearby luxury, check out restored historic hotels such as Hotel Jerome in Aspen or the Broadmoor in Colorado Springs. Both date to Colorado's mining boom in the late 1800s and deliver a five-star luxury experience.
Cripple Creek is best known as a historic mining and gambling town, but besides the fun and entertainment of its nine modern casinos, Cripple Creek offers diverse activities for all ages. You can satisfy your lust for adventure with white water rafting, river tubing, rock-climbing, mountain biking and off-road racing or explore the Trails of Gold network of hiking and biking trails through historic sites in the gold camp.
The Royal Gorge Bridge & Park – Just a few minutes away from Echo Canyon River Expeditions office, you’ll find Colorado’s Natural Wonder – the Royal Gorge. In 1929, the Royal Gorge Bridge was built across the gorge and still stands as one of the world’s greatest engineering feats. Buy tickets online or as a rafting package to save a few dollars. The newly rebuilt attractions and visitor’s center enhance your experience of this amazing chasm and expansive view of the Wet Mountain range. There are also trails, located just before the gates of the park at the rest area, that allow visitors to walk or bike a few miles along the rim of the Gorge. 
Later in June is the Scandinavian Midsummer Festival, Estes Park's annual celebration of Scandinavian culture. This festival features many Scandinavian and Nordic traditions, such as raising the Maypole, as well as authentic food and drink from the region. There is also dancing, knitting, arts & crafts, and even a reenactment of a Viking camp complete with a Viking ship and sword fight!
Putting my Rocky Mountain inspired rectangles away until February, I eventually knitted up the remaining pieces and ironed the whole thing out before I framed the simple square and placed it on my beige wall. Perhaps I needed the chill of winter to remind me of the brisk breeze of that famous mountain range, maybe I briefly tired of sweater and cardigan projects, captivated instead by the simplicity of knit-purl in straight lines.
Depending on when you choose to stay in an Estes Park vacation rental, you may be able to catch family-friendly events like the annual Teddy Bear Picnic or Longs Peak Scottish-Irish Highland Festival. If you aren't able to make it to those events, don't worry: you can always pick up some local history at the Lula W. Dorsey Museum or Stanley Steam Car Museum. Visit the local shops and galleries like the Wild Spirits Gallery or Alpenglow Images & Accents to see some local photography, woodworking, jewelry, and other crafts or pick up a souvenir or two for friends and family back home. 
Located in the valley of the Yampa River, Steamboat Springs is world-famous for its fantastic skiing and healing hot springs. With 165 main trails spread across 2,965 acres on the Mount Werner Park Range, Steamboat Ski Resort is one of the largest in the country. Another great winter fun is dog sledding with Grizzle-T Dog Sledding and their Alaskan Huskies.
Other interesting summer activities include guided tours of Chimney Rock National Monument, hot air balloon adventures and paddling, tubing or rafting along the San Juan River. In winter you can go dog-sledding, cross-country skiing, snow tubing and more at the Wolf Creek Ski Area, enjoy some brewery-hopping or simply relax in the natural Pagosa Hot Springs. Things to Do in Pagosa Springs
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What could be more romantic than enjoying a candlelit dinner for two as you gaze out over the elegant natural beauty of the Rocky Mountains? In Colorado, this is an occurrence that happens on a regular basis thanks to the close proximity to these majestic peaks. The Antlers at Vail has luxurious condos and vacation homes for a great private retreat. Enjoy your proximity to Vail Mountain and curl up by your gas fireplace. The Osprey at Beaver Creek, A RockResort is your perfect romantic getaway with steam showers and stunning fireplaces in your luxurious accommodations. And for a great experience, Mt. Prince Hot Springs Resort has the elegant Princeton Club and gorgeous hot springs to warm and relax you and your sweetheart in bliss. Start planning your own romantic rendezvous to Colorado today!
For the ultimate mountain getaway, stay in one of our updated vintage 1, 2, or 3 bedroom cabins! Just 1 mile from the entrance to RMNP on the quiet side of town. Walk to a Park trailhead, fish for stocked trout in front of your cabin, soak in the hot tub, relax around the campfire. Experience the Estes of yesteryear!  Idlewilde by the River Details

The weather in RMNP is highly variable. To avoid being caught off-guard, pay attention to the weather report (especially afternoon thunderstorms in the summer or heavy snow during the winter). The NPS also warns that wintertime visitors planning on cross-country skiing should be aware of the risks of avalanches, and should consider completing an avalanche training from places like the Colorado Avalanche Information Center before hitting the trails. For more safety tips, consult the NPS website .

One search lets you filter, compare and sort over 12,000,000 available properties from the world’s top vacation rental sites including HomeAway, VRBO, TripAdvisor, Booking.com and more. When you use Tripping.com to plan your trip and book your vacation rental, you never have to wonder if you’re getting the best deal. Find the perfect vacation rental for your next trip to over 190 countries.
Nestled just one mile from the south entrance of Rocky Mountain National Park and two miles from downtown Estes Park, Rockmount Cottages is a 20 cabin resort covering 15 acres of wilderness. On the grounds, you’ll have access to a half mile of the Big Thompson River available for fishing and riverside picnics. To fit the lodge lifestyle, each cabin is constructed of knotty pine and most include cozy, stone fireplaces as well as furnished kitchens, a 40-inch flatscreen and DirecTV, wireless internet, and outdoor charcoal grills and picnic areas.
Situated in Southern Colorado, the Great Sand Dunes National Park is an impressive sight. Shaped by winds blowing from and against the nearby Sangre de Cristo Mountains, the piles of sand climb to more than 750 feet (230 meters), making them the tallest dunes in North America. Sand-boarding, skiing and sledding on the dunes are the park’s most popular activities, and there are medium-size slopes to slide on located near the main parking area. A longer hike to the north brings thrill seekers to a 300-foot (90 meter) slope that tumbles onto into Medano Creek.
The Experience: This gorgeous crystal-blue mountain scene captures Loch Lake, which is in the Rocky Mountain National Park. Take a day trip here to see the national wonder and spend the rest of your vacation enjoying the charming college town of Boulder. Stay at the St. Julien and enjoy a spa treatment or book a room at the hip, adult-only Basecamp Hotel for a quintessential Colorado vibe.

Located near the towns of Cortez and Mancos, Mesa Verde is reached by a long road that leads high up above the surrounding landscape. The drive from the highway up to the site takes about 45 minutes. Near the highway is one of the visitor centers, where you can get information on the park and road conditions before driving up. You can book a ranger-led tour of Cliff Palace when you arrive so you know what time to show up for the one-hour tour.
Precambrian metamorphic rock formed the core of the North American continent during the Precambrian eon 4.5–1 billion years ago. During the Paleozoic era, western North America was submerged beneath a shallow sea, with a seabed composed of limestone and dolomite deposits many kilometers thick.[54] Pikes Peak granite formed during the late Precambrian eon, continuing well into the Paleozoic era, when mass quantities of molten rock flowed, amalgamated, and formed the continents about 1 billion–300 million years ago. Concurrently, in the period from 500–300 million years ago, the region began to sink while lime and mud sediments were deposited in the vacated space. Eroded granite produced sand particles that formed strata—layers of sediment—in the sinking basin.[55]
Guests are treated to a delicious gourmet three-course breakfast every morning along with complimentary bedtime snacks. An intimate library and comfortable lobby offer the perfect place to curl up with a book, an experience that is even nicer when it’s done in front of a crackling fire. The adjacent Rocky Mountain National Park provides a variety of activities from hiking and mountain biking to mountain climbing, fishing, and wildlife watching.
Zach Zehr, an avid backcountry adventurer, spends a lot of time in Rocky Mountain National Park, which is open but operating with a limited staff since Dec. 22, 2018, due to the federal government shutdown. Because of the shutdown, the roads aren’t being plowed so much of the park is not open to vehicle traffic. Fat bikes, however, work just fine. Zehr, who is also the manager at the Estes Park Mountain Shop, and some friends rode their fat bikes to the Bear Lake Trailhead and did a backcountry ski trip in the park on Jan. 6, 2019. (Provided by Zach Zehr)
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Perched on the western edge of the Rocky Mountain National Park, Grand Lake is the perfect weekend destination for outdoor enthusiasts and families traveling with kids. Providing easy access to hiking, Grand Lake is home to wildlife watching and winter activities such skiing and snowshoeing, where visitors are spoiled for choice in how they spend their days. A picturesque marina offers boat rentals and paddle boards, while there are sandy spots that are perfect for beach-related activities. Those who want to explore the area should drive along the scenic Trail Ridge Road and venture into the park to the nearby town of Estes Park on its other side.

Escape from the city with a romantic getaway just 30 minutes west of Denver to the Highland Haven Creekside Inn in Evergreen. This family-owned and operated Colorado Mountain B&B will charm you upon the moment of entering the wooded grounds. Their website describes it as an opportunity to create your own “Colorado Woodland Fairytale.” And it is that adorable.  Rustic. Quiet. Charming. And far enough away from it all to feel like a romantic getaway.
Denver is the capital of Colorado and it perfectly reflects the diversity of the state, offering visitors of all ages virtually unlimited attractions to suit all interests. You can visit several art museums, including the Denver Art Museum and the Museum of Contemporary Art Denver, and there are several art districts filled with galleries to thrill and delight all art lovers.
Precambrian metamorphic rock formed the core of the North American continent during the Precambrian eon 4.5–1 billion years ago. During the Paleozoic era, western North America was submerged beneath a shallow sea, with a seabed composed of limestone and dolomite deposits many kilometers thick.[54] Pikes Peak granite formed during the late Precambrian eon, continuing well into the Paleozoic era, when mass quantities of molten rock flowed, amalgamated, and formed the continents about 1 billion–300 million years ago. Concurrently, in the period from 500–300 million years ago, the region began to sink while lime and mud sediments were deposited in the vacated space. Eroded granite produced sand particles that formed strata—layers of sediment—in the sinking basin.[55]
The Rocky Mountain National Park Act was signed by President Woodrow Wilson on January 26, 1915, establishing the park boundaries and protecting the area for future generations.[2] The Civilian Conservation Corps built the main automobile route, Trail Ridge Road, in the 1930s.[2] In 1976, UNESCO designated the park as one of the first World Biosphere Reserves.[6] In 2017, more than 4.4 million recreational visitors entered the park.[7] The park is one of the most visited in the National Park System, ranking as the third most visited national park in 2015.[8]
The Pierre Shale formation was deposited during the Paleogene and Cretaceous periods about 70 million years ago. The region was covered by a deep sea—the Cretaceous Western Interior Seaway—which deposited massive amounts of shale on the seabed. Both the thick stratum of shale and embedded marine life fossils—including ammonites and skeletons of fish and such marine reptiles as mosasaurs, plesiosaurs, and extinct species of sea turtles, along with rare dinosaur and bird remains—were created during this time period. The area now known as Colorado was eventually transformed from being at the bottom of an ocean to dry land again, giving yield to another fossiliferous rock layer known as the Denver Formation.[58]
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