Join us on a magnificent day tour of the Rocky Mountain National Park from Denver.  See the continental divide, the most prominent hydrological division and the world’s largest mountain barrier. On this day trip from Denver, we will take you to the “top of the world” in the park, filled with spectacular vistas. Experience the great outdoors and nature by walking along beautiful trails and watching the wildlife in its natural habitat.  The Rocky Mountain National Park is considered to be one of the most majestic and breathtaking sights to behold in our country.  On this Sightseeing tour, you be witness to once in a lifetime wildlife sightings, soaring mountain peaks, and come to understand the true meaning of “Purple Mountain Majesties”. Winter (November - May): In this mountain tour, we will explore the quaint and peaceful Bear Lake. Stop at Estes Park (lunch stop), Gateway visitor center, Moraine Park, Stanley Hotel (photo opportunity) and moreSummer (June - October): we will explore Trail Ridge Road, stop at the Alpine Visitors Center, which features extraordinary views of alpine tundra and full river cirque. Stop at Estes Park, Many Parks curve, Rainbow curve, Stanley Hotel (photo opportunity) and more. You’ll also have the chance to take in some local history about our beautiful state, and grab a snack and souvenir.  This park is full of more wildlife and breathtaking views than most people see in an entire lifetime.   Note: tour may be modified due to the weather and road closures.
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.

Nicknamed the “Mile High City,” Denver is a haven for outdoor-lovers year-round, making it one of the best weekend getaways in Colorado for any type of travelers. Bring your camera along to capture views of urban and natural scenery alike—Larimer Square and the 16th Street Mall are two essential sightseeing destinations for first-timers, and Mount Elbert is always looming large in the background. The real Denver attraction, though, is the culture, which you can discover on a walk through the city’s distinct neighborhoods, on a Denver sightseeing tour, or a bike and brewery tour (it doesn’t get more Denver than that).


Buena Vista is an historic mining and railroad town that resoundingly lives up to its Spanish name meaning “good views” – you are surrounded by towering mountain peaks that provide a wonderful year-round playground for adventure seekers. The area boasts some of the best river rafting adventures in the country and you can also go hiking, biking, horseback riding, fishing and zip-lining.
A gorgeous mountain town that is not as well-known as its counterparts, Salida offers a variety of historic attractions to fill up a weekend itinerary. Take the Monarch Scenic Tram to soak in stunning Rocky Mountain views, go for a dip in the Salida Hot Springs or explore the area’s local history and culture at the nearby Salida Museum. When the weather warms up, grab a kayak or tube and head to the Arkansas River, and active travelers can utilize one of the many scenic mountain bike trails to explore the region further. A certified Colorado Creative District, visitors can also browse the area’s abundance of impressive art studios and galleries.
Apart from elk, many other ungulates reside in the park, including bighorn sheep, moose, and mule deer. Bison were eliminated from the park in the 1800s, as were pronghorn and moose, the latter of which was restored to the area in 1978. Moose are now frequently seen in the park, especially on the park's west side.[77] The park's bighorn sheep population has recovered and is estimated at 350 animals.[78]
A geographical anomaly is found along the slopes of the Never Summer Mountains where the Continental Divide forms a horseshoe–shaped bend for about 6 miles (9.7 km), heading from south–to–north but then curving sharply southward and westward out of the park.[5][27] The sharp bend results in streams on the eastern slopes of the range joining the headwaters of the Colorado River that flow south and west, eventually reaching the Pacific.[5][28] Meanwhile, streams on the western slopes join rivers that flow north and then east and south, eventually reaching the Atlantic.[5][28]
Although there are a limited number of dining establishments inside Rocky Mountain National Park, nearby Estes Park offers 70-some restaurants, which serve up a range of cuisines. You'll find a handful of fine dining establishments, including the traveler-favorite Twin Owls Steakhouse, but most of its restaurants are casual yet tasty spots. To refuel after a long day on park trails, travelers should head to Elkhorn Avenue in Estes Park for just about any kind of cuisine. For instance, Antonio's Real New York Pizza & Deli is a great spot to dine in or takeout, Nepal's Café is a prime place to fill up on Indian-Nepalese dishes, while Peppers Mexican Grill is beloved for its buffalo nachos. 
Spa facilities are quite unique - hot springs are housed in the teepee and bath house, while the massage and yoga rooms are located in the Pony Express Stop. Direct feeds from geothermal springs in some of the guest cabins are even more surprising and a fun adventure honeymoon idea. Spa treatments offered at the spa include wraps, reflexology, Trager Therapy, hot rocks massage and other holistic and therapeutic healing techniques. The resort is situated near the Four Corners and in the midst of two national forests where you can enjoy hiking, climbing, snow-shoeing, back country skiing, heli-skiing and fly fishing on your adventure honeymoon.
Colorado’s second-largest city, Colorado Springs is nestled at the foot of the majestic Pikes Peak. Filled to the brim with scenic landscapes, escape your daily stresses for a weekend away exploring the Pikes Peak and Garden of the Gods. Capture the perfect shot of the rocks framing the snow-capped splendors, or visit the area’s cultural attractions such as Pioneers Museum, American Numismatic Association Money Museum or the Cheyenne Mountain Zoo. The downtown area is full of impressive art galleries, in addition to a U.S. Olympic Training Center and the U.S. Air Force Academy.
^  This article incorporates public domain material from the Library of Congress document: "Majestic view from the old, one-way, dirt Fall River Road in Rocky Mountain National Park in the Front Range of the spectacular and high Rockies in north-central Colorado". Library of Congress - Prints & Photographs Online Catalog. Retrieved October 28, 2016. 

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!
Unless you’re really into skiing or boarding, you probably haven’t considered a honeymoon in Colorado among your destinations, but you really should. While it is outstanding for those who like to glide down snowy slopes, the Rocky Mountain State offers a whole lot more for honeymooning couples. Not only is there over 300 days of sunshine a year to enjoy its dramatic mountain peaks, but it offers everything from hot springs, vineyards and countless microbreweries to a wide range of other outdoor adventures, like hiking, mountain biking, whitewater rafting and more. It also happens to be home to many fabulous resorts that are ideal for romance, including these.
Glacial Basin was the site of a resort run by Abner and Alberta Sprague, after whom Sprague Lake is named. The lake is a shallow body of water that was created when the Spragues dammed Boulder Brook to create a fish pond. Sprague Lake is a popular place for birdwatching, hiking and viewing the mountain peaks, along with camping at the Glacier Basin campground.[46]
Nestled below Colorado's radiant mountaintops is beautiful Lazy R Cottages in Estes Park. Just one mile from Rocky Mountain National Park, we offer one-, two- and three-bedroom cabins perfect for romantic escapes and family vacations. Our cabins have kitchens or kitchenettes, fireplaces, decks with mountain views, and some with personal hot tubs … perfect for relaxing after a day enjoying Estes Park and the National Park. Dog-friendly units available ($15 per dog/per night). Free Wi-Fi. View more about our Estes Park cabins.

Michigan's apples, cherries, blueberries, and peaches are second-to-none, so make sure to sample those. Another specialty is the coney dog — a hot dog served with mustard, chili, and freshly-cut onions. Also sample the pasties found in the Upper Peninsula, made from potato, onion, meat, and rutabaga. Foodies adore the Cudighi sausage-patty hoagie topped with mozzarella cheese and tomato sauce. With all those Great Lakes, can freshwater fish preparations be far behind? Hot favorites include whitefish and lake perch served with salad and mash potato.


The Gant is one of the best romantic getaways for couples who like the flexibility of staying in a luxury condominium hotel located at the base of Aspen Mountain. The resort has two heated outdoor swimming pools, three hot tubs, five tennis courts, barbecue grills and laundry facilities. Summer activities in Aspen include whitewater rafting, fly fishing, golf, horseback riding, jeep tours, hot air balloon rides, parasailing and mountain biking. In the winter, plan a ski trip, snowboarding, snowshoeing, snowmobiling, sleigh rides, snowcat powder tours and ice skating.

Beginning in Durango, the San Juan Skyway Scenic Byway is a complete loop that will take you up to Silverton, along the Million Dollar Highway to Ouray, over to Placerville, south to Telluride, Dolores, Mancos, and back to Durango. If you have less time or are only planning on heading in one direction, you can do the Silverton to Ouray section beginning from Durango, up to Silverton, over the Million Dollar Highway to Ouray, and beyond to Montrose or further north to Grand Junction.
Summer nights are long in Colorado, and after dinner Brian and I still had time for a shoreline walk around the Barker Reservoir, rimmed by mountains and fed by a cool and clear river. I took photos of the baby Canada Geese near shore, a speck of black in the middle of the water that turned out to be a cormorant, a hummingbird settled against a tree branch, while Brian cast a line. But I really didn’t want to move.

The famous hot springs of Glenwood is a must-see and do for all romantics. Located in Glenwood Springs, less than 3 hours from Denver, the historic and local family-owned Hotel Denver spans more than 100 years with many stories to tell, including Colorado immigrants, prohibition, gangsters, world wars, and even a Wild West shooting or two. This Colorado hotel has bragging rights to prime real estate in historic downtown Glenwood Springs, close to the train, many restaurants, shopping, the Hot Springs Pool, and our personal favorite, the Iron Mountain Hot Springs.
ItineraryThis is a typical itinerary for this productStop At: Images of Rocky Mountain National Park, Estes Park, ColoradoEnjoy winter in all its beauty and head for the mountains on this incredible 8-hour tour to Rocky Mountain National Park. Around each corner are breathtaking views, alpine lakes and wildlife in a serene setting. Wintertime is the perfect to head to the park as the snow capped mountains are truly breathtaking with the peace and tranquility the mountains have to offer.Duration: 5 hours

Gem Lake is high among the rounded granite domes of Lumpy Ridge. Untouched by glaciation, this outcrop of 1.8 billion-year-old granite has been sculpted by wind and chemical erosion into a backbone-like ridge. Pillars, potholes, and balanced rocks are found around the midpoint of the trail, along with views of the Estes Valley and Continental Divide.[42] Potts Puddle trail is accessible from the Black Canyon trail.[42]
The Fern Lake trail passes Arch Rock formations, The Pool, and the cascading water of Fern Falls. Two backcountry campsites are located near the lake, and two more are closer to the trailhead. Odessa Lake has two approaches: one is along the Flattop trail from Bear Lake while the other is from the Fern Lake trailhead, along which are Fern Creek, The Pool, Fern Falls, and Fern Lake itself. One backcountry campsite is available.[44] Other lakes are Jewel Lake, Mills Lake, Black Lake, Blue Lake, Lake of Glass, and Spruce Lake.[44]
While sightseeing in Denver, be sure to note your elevation: One of the steps in front of the Colorado State Capitol building is marked with a plaque signifying that it is exactly 5,280 feet, or one mile, above sea level. A perfect opportunity to snag a memorable smooch in the Mile High City — “mile-high club” jokes totally optional. More things to do in Denver >>
A small city that packs a lot of punch for its size, Vail is one of the most beloved ski destinations in the country, where its not uncommon to spot a celebrity or two. Nestled between the Gore Mountain Range and Sawatch Mountain Range, this narrow alley is home to the largest single-mountain resort in the United States. While most visitors come to Vail for its famous 5,289 acres of ski slopes, in the summer visitors can also explore the Eagles Nest Wilderness Area and Holy Cross Wilderness area to hike the area’s rugged mountainside trails.
The park may be accessed through Estes Park or via the western entrance at Grand Lake. Trail Ridge Road, also known as U.S. Route 34, connects the eastern and western sides of the park.[91] The park has a total of five visitor centers. The Alpine Visitor Center is located in the tundra environment along Trail Ridge Road, while Beaver Meadows and Fall River are both near Estes Park, with Kawuneeche in the Grand Lake area, and the Moraine Park Discovery Center near the Beaver Meadows entrance and visitor center.[9]
Located 75 minutes west of the Resort along with a five-mile stretch of Colorado’s famed Tarryall River, The Broadmoor Fly Fishing Camp is a private escape that pairs world-class fishing with exceptional accommodations and dining. This outstanding retreat borders 120,000 acres of the Lost Creek Wilderness, offering honeymooners who love to fish together the opportunity to experience more than five miles of private waters under the guidance of professional Broadmoor guides. The picturesque camp features a beautifully restored Main Lodge with a wraparound deck and seven rustic yet well-appointed guest cabins dating back to the 1920s. During the evenings, guests gather in the Main Lodge for artfully prepared meals and relaxation. In addition to the exceptional fly fishing, camp guests can enjoy a variety of fun activities such as horseback riding, hiking, and the opportunity to see some of Colorado’s most spectacular wildlife.
Summer is the busy season in Rocky Mountain National Park, with the most popular activities being hiking, wildlife viewing, camping, fishing, horseback riding, climbing, and bouldering. Winter in the park holds its own unique beauty and attractions. Many of the roads are open year-round, although closures may occur due to weather conditions. People often come here at this time of year to snowshoe or cross-country ski, and ranger-led tours are offered in both of these sports.
Located at the foot of Pikes Peak, Colorado Springs draws visitors who come to see the view from the mountain that inspired the writing of the song “America, the Beautiful.” Some hike to the mountain’s 14,115-foot (4,302 meter) summit while others drive or enjoy a ride on the Pikes Peak Cog Railway. With its sculptural sandstone formations and balancing rocks, the Garden of the Gods is another popular natural attraction. This culturally rich city has many museums worth exploring too, including the Fine Arts Center, Pioneer Museum and the Rock Ledge Historic Site, an open-air museum where costumed docents depict life in Colorado Springs throughout its long history.
Take in the beautiful scenery of Colorado's Front Range, the gateway to Rocky Mountain National Park, as you zip through the trees! Just a 30-minute drive from downtown Denver lie three of Colorado’s longest zipline tracks. 6-line Zipline: Enjoy 4 hours of fresh air, scenic views and thrills on the 6-line zipline in the Rocky Mountains. Ride on six lines that range from 850 feet (259 m) to 1,900 feet (579 m). Soar through the treetops and experience three of Colorado’s longest ziplines! There is a 10-minute uphill hike between the first and second zipline and minimal walking between the others; above-average physical condition is recommended.
Catering to couples and perfect for honeymoons or weekend getaways, each cabin at Annie’s Mountain Retreat has its own private, outdoor hot tub. Just three miles from Estes Park, three of the buildings are located along the Big Thompson River with water access, and the fourth borders Rocky Mountain National Park with access to hiking trails just steps away!

Here you can go on an art walk, attend a current event or festival, and learn all about Greeley’s history at the Centennial Village Museum. The Colorado Model Railroad Museum is another must-see attraction, or you could explore the outdoors by hiking the Poudre River Trail or the Pawnee National Grasslands or playing a round of golf. Keep reading for more Colorado points of interest.
After your fireside meal, retreat to one of the private, wooden hot tubs tucked in the middle of the woods. A hand-held stroll along the forest path to a bubbling tub overlooking the city's lights will set the perfect mood. Take it to the next level and request a night's stay in the old firehouse on the tip-top of the mountain. There's no better view — maybe anywhere in the state.  

Buena Vista is an historic mining and railroad town that resoundingly lives up to its Spanish name meaning “good views” – you are surrounded by towering mountain peaks that provide a wonderful year-round playground for adventure seekers. The area boasts some of the best river rafting adventures in the country and you can also go hiking, biking, horseback riding, fishing and zip-lining.
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.
You have never seen a Y like this!  We offer over 200 family cabins ranging from 2-4 bdrms, which can hold up to 10 people.  Be close to the main campus & activities or far from it all, in secluded woods.  Our cabins are fully furnished and include eating & cooking utensils, plus linens & towels.  Many free activities are available - we offer more activities onsite than any other area property!  YMCA of the Rockies - Estes Park Center Details
Maroon Bells-Snowmass Wilderness showcases some of Colorado's most spectacular Rocky Mountain scenery and offers a chance to get out of your car and into nature. This area has six mountains over 14,000 feet, along with forests, alpine lakes, meadows, and 175 miles of trails to help you explore the terrain. Alternatively, you can enjoy the views on some of the scenic drives.
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.
The outdoor adventurer remains busy throughout the year in Rocky Mountain National Park. Open 365 days a year, there are activities and sports throughout the summer/fall and winter/spring seasons. Whether looking for a new route to an adrenaline rush, or simply enjoying a favorite pastime, Rocky Mountain National Park's unique and varied landscapes offer something fun. 

Ideally located within a few miles of the Loveland ski area, the Georgetown Mountain Inn offers a cozy alpine atmosphere with spectacular mountain views. Situated within walking distance of Georgetown’s historic downtown area and its eclectic mix of shops, restaurants, bars, and nightclubs, the inn features 33 comfortably furnished guest rooms with private bathrooms and modern amenities.
Keystone is the ultimate year-round outdoor playground. Families will discover a wealth of things to do to keep the kids, and themselves happy, with everything from a Kidtopia Play Park, Keystone Science School Day Camps and the summer snow tubing hill to stand up paddle boarding and boating on the lake, miniature golf, GPS Geo-Cache Adventures and dinner wagon rides. Then there are the festivals, like the Model Boat Regata, the Snake River Festival, and Cirque D’Wheels. If you stay at Keystone Resort, the Kidtopia Children’s Theatre hosted in the Quaking Aspen Amphitheatre is free every Friday.

While sightseeing in Denver, be sure to note your elevation: One of the steps in front of the Colorado State Capitol building is marked with a plaque signifying that it is exactly 5,280 feet, or one mile, above sea level. A perfect opportunity to snag a memorable smooch in the Mile High City — “mile-high club” jokes totally optional. More things to do in Denver >>


Solitude Cabins offers a rate to fit every budget and time of year, whether you want to get away in the winter for a snowy adventure, or your prefer to enjoy the colorful hiking trails of the summer. We do offer discounts and package specials, so please contact us well ahead of your trip to learn more. Our cabins comfortably house up to six guests.

Bear Lake is a high-elevation lake in a spruce and fir forest at the base of Hallett Peak and Flattop Mountain.[44] Bierstadt Lake sits atop a lateral moraine named Bierstadt Moraine, and drains into Mill Creek. There are several trails that lead to Bierstadt Lake through groves of aspens and lodgepole pines.[45] North of Bierstadt Moraine is Hollowell Park, a large and marshy meadow along Mill Creek. The Hollowell Park trail runs along Steep Mountain's south side. Ranches, lumber and sawmill enterprises operated in Hollowell Park into the early 1900s.[45]
Another addition to the Denver skyline is the 165-room ART Hotel, which opened early summer of 2015. Located in downtown Denver’s Cultural District, the boutique hotel is simply unique, capturing the contemporary art scene as if the hotel were its sketching pad. When my husband and I stayed there, one of our favorite things to do order a cocktail at the rooftop bar and then step out onto the  FIRE Terrace, a unique Denver rooftop bar and restaurant experience with a fourth-floor patio that overlooks the bustling life of the Broadway Street below.
The Experience: Like Crested Butte, Telluride is a place that anyone will fall in love with no matter the season. Plus, it's a bit more down-to-earth than Aspen and Vail for anyone looking for a Colorado ski town that has a more casual energy. Surrounded by the San Juan Mountains, the charming town is lined with authentic saloon-like bars, boutique gourmet eateries, and old-school chop houses. If you visit during the winter, hit the slopes or go helicopter skiing and dog sledding. And in the summer, you can do anything from riding around the backcountry in an old Jeep to river rafting, fly-fishing, and hiking to the many striking mountain springs, including Blue Lakes, Hope Lake, and Navajo Lake. Book a room at the Dunton Town House for an intimate stay.
There are multiple scenic trails to hike and challenging cycling paths to discover as well as many more activities like zip-lining and horseback riding. You can explore the history and architecture of historic sites like Miramont Castle and Manitou Cliff Dwellings, visit the Manitou Springs Heritage Center, or enjoy some pampering at a day spa before catching a show at the Iron Springs Chateau Melodrama Theatre.
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.
Take in the beautiful scenery of Colorado's Front Range, the gateway to Rocky Mountain National Park, as you zip through the trees! Just a 30-minute drive from downtown Denver lie three of Colorado’s longest zipline tracks. 6-line Zipline: Enjoy 4 hours of fresh air, scenic views and thrills on the 6-line zipline in the Rocky Mountains. Ride on six lines that range from 850 feet (259 m) to 1,900 feet (579 m). Soar through the treetops and experience three of Colorado’s longest ziplines! There is a 10-minute uphill hike between the first and second zipline and minimal walking between the others; above-average physical condition is recommended.
You can get maps and info at the Estes Park Visitors Center and catch a free shuttle bus to most main attractions. Intrepid adventurers will find an almost endless list of outdoor activities to try, including mountaineering on Longs Peak, thrilling white water rafting, hiking, biking, backpacking, skiing and snowshoeing. Less daring visitors can enjoy the River Walk, take a scenic drive, play a round of golf, or do some wildlife watching. Things to Do in Estes Park

Above tree line, at approximately 11,000 ft (3,400 m), trees disappear and the vast alpine tundra takes over.[69] Over one third of the park resides above the tree line, an area which limits plant growth due to the cold climate and strong winds. The few plants that can survive under such extreme conditions are mostly perennials. Many alpine plants are dwarfed at high elevations, though their occasional blossoms may be full-sized.[73]

When taking in the amazing views at Rocky Mountain National Park, don’t forget to look down! Summer is a great time to see wildflowers at the park, which is home to hundreds of different flower species. Wander through colorful mountain meadows and alpine wildflower hotspots like this beautiful rainbow bouquet at Upper Ouzel Creek. Crystal Brindle, National Park Service
Larger groups and families on longer stays can choose to stay in private, fully-equipped condos overlooking the park, all of which feature spacious living areas, superior facilities, and a complimentary gourmet breakfast each day. Dine in style at one of four restaurants and bars that serve an array of seasonal cuisine, unwind in the exclusive Aspire Spa with an indulgent treatment or massage, and enjoy a range of fantastic outdoor activities throughout the year, including hiking, biking, fishing, horseback riding, skiing, snowboarding, ice skating, and sleighing. Read more about Estes Park, one of the top Colorado destinations.
Baker Pass crosses the Continental Divide through the Never Summer Mountains and into the Michigan River drainage to the west of Mount Nimbus[36]—a drainage that feeds streams and rivers that drain into the Gulf of Mexico.[28] Other mountain passes are La Poudre Pass and Thunder Pass, which was once used by stage coaches and is a route to Michigan Lakes. Little Yellowstone has geological features similar to the Grand Canyon of the Yellowstone. The Green Mountain trail once was a wagon road used to haul hay from Big Meadows. Flattop Mountain, which can be accessed from the eastern and western sides of the park, is near Green Mountain. Shadow Mountain Lookout—a wildfire observation tower—is on the National Register of Historic Places.[36] Paradise Park Natural Area is an essentially hidden and protected wild area with no maintained trails penetrating it.[39]

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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