Only a few miles from downtown Denver, Littleton is a historic suburb of Denver with its own charm and history. Its turn-of-the-century houses are witnesses of the rich history while cozy restaurants and bars are inviting and popular. The Main Street has a lineup of independently owned galleries and shops. The Littleton Museum tells the story of the town’s past with its 19th century farm. Town Hall Arts Center presents community-run theater and music events. Littleton has more than 59 parks and two light rail stations with access to Downtown Denver. For outdoor enthusiasts, the Rockies are only half hour away. South Platte Park and Carson Nature Center offer hiking trails and fishing lakes. Pirates Cove Water Park has lap pools, a 35-foot slide, and a tubing river.
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]
Boasting a rich history, cozy accommodations, delicious cuisine, and spectacular mountain views, the Baldpate Inn is a traditional mountain getaway that has been enchanting visitors for nearly 100 years. Built in 1917, the inn is located seven miles south of Estes Park next to the Rocky Mountain National Park and offers a variety of things to see and do. Well-appointed guest rooms are decorated with country mountain flair. You’ll find niceties such as handmade quilts and calico dust ruffles, and rooms also feature en-suite bathrooms and spectacular views.

This charming cabin is found in Nederland, Colorado, right in the thick of the wilderness. This spacious cabin will give newlyweds the perfect setting to begin the start of married life with the comfort of high-end amenities and gorgeous views of the great outdoors from the comfort of an incredible accommodation. With all the amenities and facilities you would need for a home, a full kitchen, queen sized bed, full entertainment system, and a BBQ, couples will love their escape to this rental. This cabin is nestled into the Rocky Mountains, providing couples with a lot of new adventures to embark on.
The Fall River Visitor Center just outside Rocky Mountain National Park is the only one open during the government shutdown. It's run by the Rocky Mountain Conservancy, a non-profit that supports the park. That, plus its location outside the park, and the fact that the Rocky Mountain Conservancy leases the private building are why this visitor center can stay open.
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.
If you're looking to splurge during ski season, Aspen is the place to be. This small town is conveniently tucked between four renowned ski spots that offer quality slopes for all levels of skiers. Not only that, but the town features the crème de la crème of luxury resorts that whip up an après-ski scene so appealing it'll be pretty tough to leave. Read More »
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]

Fishing was a popular pastime for early visitors to the park, and it remains so today, with anglers catching several types of trout, including brown, brook, rainbow and cutthroat. Note: A valid Colorado fishing license is required for all persons 16 years of age or older to fish in Rocky Mountain National Park. For current Colorado fishing license fees visit the Colorado Division of Wildlife website. 

The house also features a hot tub on the second-floor deck, a modern entertainment living room with a large, flat screen television for movie watching and a lovely terraced back garden with a gazebo. Winter Park Chateau enjoys a prime downtown location within walking distance to many restaurants, cafés, and bars, as well as nightclubs. It is within walking distance of the ski mountain and close to four championship golf courses and Rocky Mountain National Park.
Grand County is home to expansive views, rugged peaks and open countryside. Its premier resort, Winter Park, attracts travelers from all over for it’s world class ski slopes. Mary Jane, Winter Park’s other half, has premier bumps, tree skiing and a bowl. Situated north on Highway 40, Granby Ranch is geared for family fun, with easy learning trails, as well as night skiing on Friday and Saturday.
Enjoy LUXURY mountain cabins at our resort with outstanding VALUE. "A Home Away from Home Getaway." 1, 2, and 3-bdrm condos available with fully applianced kitchens, living room fireplaces & private decks overlooking Fall River. Private hot tubs & spa suites are also available. Located only 1 mi. to RMNP, 3 mi. to Downtown. FREE: Stocked river fishing, Wi-Fi, local calls, movies, games, indoor & outdoor activities.  Estes Park Condos Details
In the subalpine zone, lodgepole pines and huckleberry have established themselves in previous burn areas. Crystal clear lakes and fields of wildflowers are hidden among the trees. Mammals of the subalpine zone include bobcats, cougars, coyotes, elk, mule deer, chipmunks, shrews, porcupines and yellow-bellied marmots. Black bears are attracted by the berries and seeds of subalpine forests. Clark's nutcracker, Steller's jay, mountain chickadee and yellow-rumped warbler are some of the many birds found in the subalpine zone.[72] Sprague Lake and Odessa Lake are two of the park's subalpine lakes.[72]
Owners Wendye Sykes and Shelley Powers came to Estes Park from San Francisco looking for an escape from the grind of everyday city life — and that’s exactly what they’ve created at River Spruce. Offering nine different cabins, you’ll find lodgings suitable for couples and families all nestled amidst the scenic Rocky Mountain wilderness and along the Big Thompson River.
Tucked deep in the San Juan Mountains in southwestern Colorado, this carefully restored 19th-century ghost town and natural spa is surprisingly well appointed. The rugged, old-timey building exteriors hide high-end features such as cathedral ceilings, air conditioning, and gas fireplaces. Dolores has four parks and a peaceful bike trail that takes peddlers along the tumultuous Dolores River. You can enjoy hands-on exhibits and a nature hike at the Anasazi Heritage Center, or explore an exact replica of the original narrow-gauge rail car, the Galloping Goose. Share a romantic meal with tasty cocktails at Sophia’s Bistro.
Fishing was a popular pastime for early visitors to the park, and it remains so today, with anglers catching several types of trout, including brown, brook, rainbow and cutthroat. Note: A valid Colorado fishing license is required for all persons 16 years of age or older to fish in Rocky Mountain National Park. For current Colorado fishing license fees visit the Colorado Division of Wildlife website.
Have a company outing, family reunion or just a bunch of friends that want to get together on the mountain?  E-Tow Cabin is the perfect place for your next outing.  Reserve the E-Tow Cabin and you and your group will have exclusive access to the cabin for the day. Cook lunch on the propane grill, warm up next to the wood burning stove and enjoy the view from the deck with friends and family. Advance reservations are required.  No taxi rides up or down for guests or supplies.  All guests must ride lift up with skis or snowboard.  Not for overnight use. Rental for groups of 10 or more.
No trip to Estes Park would be complete without a leisurely drive along the Trail Ridge Road at Rocky Mountain National Park, with its winding scenic views of craggy peaks. Park your vehicle and take a hike through one of the many pine-scented trails bordered by forests and tundra. Keep an eye out for elk and other wildlife as you go! Roosevelt National Forest is another wilderness area worth exploring, Meanwhile, you can enjoy the breathtaking views over the valley on the Estes Park Aerial Tramway, which connects the town to the summit of Prospect Mountain. Down Estes Park has lots of options for one-off shopping and dining, whether you feel like chowing down on a handmade pizza or a juicy elk burger. Afterward, quench your thirst with a pint of Colorado craft beer at one of Estes' local breweries.
Smith Fork Ranch is a traditional homestead within the Rocky Mountains and rolling meadows of Colorado featuring old-fashioned Western hospitality and sophisticated wine and cuisine. The cozy mountain lodges envelop guests in homely comfort with plush furnishings, wood burning fireplaces, original artwork, slate tiled bathrooms, handmade soaps and organic lotions, feather beds with fine linens, and hot tubs. The undulating landscape is teeming with wildlife and offers superb hiking, while activities on the ranch will keep honeymooners busy the entire stay.
Nestled along the Fall River, Murphy’s River Lodge is located only two blocks from the historic downtown area of Estes Park. Completely remodeled lodgings include 13 rooms, rooms with private decks, a second property Murphy’s Resort and six fully-furnished vacation home rentals in Estes Park. These single family home rentals include access to River Lodge or Resort amenities including the pools and hot tubs!
Situated on Vail Square, The Arrabelle sets the standard for luxurious lodging, while its jaw-dropping setting reflects the romantic heritage and ambiance of the European Alps. Here you’ll find architectural touches of Salzburg, Innsbruck and Prague, along with high-end amenities such as personal butler service, ski valet and even grocery delivery. Look forward to heading to the rooftop for laps in the pool and soaking in the whirlpool together while taking in magnificent Rocky Mountain views. You can also relax and unwind together while indulging in treatments at the property’s RockResorts Spa, which offers even more stunning Rockies vistas. Each one of the spacious suites host impressive features like a living room area with a fireplace, ideal for toasting to your new life together while cuddling up next to its warmth.
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.
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.
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.
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.
The Mummy Range is a short mountain range in the north of the park. The Mummies tend to be gentler and more forested than the other peaks in the park, though some slopes are rugged and heavily glaciated, particularly around Ypsilon Mountain and Mummy Mountain. Bridal Veil Falls is a scenic point and trail accessible from the Cow Creek trailhead, at the Continental Divide Research Center.[41] West Creek Falls and Chasm Falls, near Old Fall River Road, are also in this region. The Alluvial Fan trail leads to a bridge over the river that had been the site of the Lawn Lake Flood.[42]
Following pickup from Denver Union Station, travel by comfortable, air-conditioned coach into the famous Rocky Mountains, or Rockies for short. Your knowledgeable driver delves into the powerful geologic forces that created this stunning mountain range as you drive over Berthoud Pass, 11,314 feet (3,448 meters) above sea level, crossing the Continental Divide. Continue to admire the rugged Rockies as you descend curving, tree-lined roads. You will drive through Winter Park, a small ski resort town on the western slope of the Continental Divide with fun family activities throughout the year. Then you will head to the next town, Grand Lake. Enjoy lunch at an outdoor cafe with fantastic views of the town's namesake, the largest and deepest natural lake in Colorado. Your tour culminates at Rocky Mountain National Park, a 265,000-acre (107,240-hectare) park with 150 lakes and dozens of lofty mountain peaks. Keep your eyes open for elk, bighorn sheep, moose and black bears as you make your way through the park. Drive along Trail Ridge Road, ascending more than 12,000 feet (3,658 meters) above sea level. Along the way, pause at overlooks for incredible photo ops of peaks, valleys and rushing streams. Enjoy more scenic mountain roads on your return journey, and conclude your 10-hour day trip in central Denver.
It may be summertime but Snowmass has returned to the Ice Age with the Snowmass Ice Age Discovery Center that features the most significant Ice Age ecosystem find in Colorado history (and it’s free). Touch a mastodon tooth, marvel at a half-sized 6-foot Wooden Mammoth Skeleton, do a dig of your own or a daily Ice Age Discovery Hike by  Environment Studies.  Visit the Snowmass Rodeo on Wednesday nights (June 12- August 28) and sign up your kids for the Calf Scramble and Mutton Busting. Ride the Elk Camp Gondola up Snowmass Mountain where the Elk Camp Restaurant will open for activities including downhill biking, dinner, campfires, live music, movies, Stryder Park and Kid’s Playground on Friday evenings. Try your hand at some slopeside bowling at the new bowling alley below Venga Venga Cantina featuring eight full-sized lanes, a lounge area with full bar, wood-fired oven pizzas, upscale bar food and more. Then, get inspired at the Anderson Ranch Arts Center, a stellar place for kids of all ages to take workshops that include sculpture, photography, painting, beading, and mask-making.
Rock climbing and mountaineering opportunities include Lumpy Ridge,[85] Hallett Peak, and Longs Peak, the highest peak in the park, with the easiest route being the Keyhole Route. This 8 mi (13 km) one-way climb has an elevation gain of 4,850 ft (1,480 m). The vast east face, including the area known as The Diamond, is home to many classic big wall rock climbing routes. Many of the highest peaks have technical ice and rock routes on them, ranging from short scrambles to long multi-pitch climbs.[86]
The main things to do here are to simply gaze out over the canyon and appreciate the environment or wander along the walking paths and short hiking trails on the rim. These are generally flat and easy trails. If you're adventurous, you can hike into the canyon, but trails are not maintained or marked, conditions are difficult, and you are basically on your own and responsible for the costs of rescue, should the need arise. Three campgrounds are located in the park; the North and South Rim campgrounds are open to tents and RVs but the East Portal is only open to tents.
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.
The rugged and elevated landscape and disused mining roads provide a challenging playground for mountain biking and off-road vehicles, while fishermen can head to Molas Lake to cast a line. You can go hiking in the San Juan National Forest, take a four wheel drive along the Alpine Loop Scenic Byway, or savor a scenic ride on the Durango & Silverton Rail Road. Things to Do in Silverton
Nature lovers can go hiking, white water rafting, horseback riding or climbing in one of the surrounding national parks, or you could choose to explore historic archaeological sites such as Hovenweep, Chaco Canyon and Mesa Verde. The Durango & Silverton Narrow Gauge Railroad is a highlight of any visit and you can combine various adventure sports packages with your scenic train ride. Keep reading for more Colorado points of interest. Things to Do in Durango
At one time, Niwot was an important hunting and fishing area for American Indians. A railroad extension followed the arrival of Gold Rush miners, and many of the original buildings are part of Old Town in the National Historic District. Located 9 miles from Niwot, the Boulder Reservoir is a popular spot for swimming, boating, and fishing, and there are extensive trails to hike or bike throughout the area. Book your stay at the tranquil Niwot Inn and Spa, or choose a rural escape, like a fully restored 1890s farmhouse where a creekside bike path connects you to the cottonwood-shaded Pearl Street in Boulder. Enjoy a romantic evening at Colterra Food & Wine or the popular Sugarbeet in nearby Longmont.
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.
You can explore eight other designated Historic Neighborhoods before swapping history for nature as you hike or cycle the numerous scenic trails. Families can have fun at the Splash Water Park while adults can taste their way around small craft breweries and visit the largest American brewery on the Coors Tour. Keep reading for more Colorado points of interest. Things to Do in Golden

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!
Colorado Springs offers multiple locally-owned Bed and Breakfasts that are close to attractions, shopping and restaurants. These B&B’s are the picture-perfect place for you and your partner to unwind.  Many of the Bed & Breakfasts also feature a romantic weekend room which will include a private bathroom with a jetted tub and delicious hot breakfast.
Colorado has one of the most diverse plant and animal environments of the United States, partially due to the dramatic temperature differences arising from varying elevation levels and topography. In dry climates, the average temperature drops 5.4 degrees Fahrenheit with every 1,000 foot increase in elevation (9.8 degrees Celsius per 1,000 meters). Most of Colorado is semi-arid with the mountains receiving the greatest amount of precipitation in the state.[64]
Experience Estes Park Lodging in luxurious accommodations, breathtaking views of mountains and lakes, cozy fireplaces and the ultimate Premier Estes Park Vacation Rentals. Estes Park Central holds the highest standards in private, luxury Estes Park vacation rental properties and guest services.  All our Private Estes Park Vacation Rental Properties from 1 bedroom to 7 bedrooms, historic log cabins to upscale elegant homes, feature top of the line fully equipped kitchens, TV and DVD, fireplaces, cozy living areas, free wireless Internet, with luxurious and mountain decors, and views of the Rocky Mountains.  We supply exemplary maintenance and housekeeping services to all of our owners and guests.

Region 5, known for waterfalls and backcountry, is south of Estes Park and contains Longs Peak—the park's iconic fourteener—and the Wild Basin area.[35] Other peaks and passes include Lily Mountain, Estes Cone, Twin Sisters, Boulder-Grand Pass, and Granite Pass.[47] Eugenia Mine operated about the late-19th to early-20th century, with some old equipment and a log cabin remaining.[47] Sites and trails include Boulder Field, Wild Basin Trail, and Homer Rouse Memorial Trail.[47]
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.
Known as a world-class ski destination, Aspen is beautiful year around and offers activities and attractions for all ages. Skiers can challenge their skills on the magnificent steeps, slopes and glades of Aspen Mountain or Ajax, on rugged Aspen Highlands or enormous Snowmass. Take a 14 minute ride with the Silver Queen Gondola to the top of Ajax Mountain for the spectacular views of the mountain peaks, the city below and tall evergreens all around you. There are bluegrass concerts on Sundays.
Snuggled in a peaceful valley not far from Glenwood Springs, Colorado, Four Mile Creek Bed and Breakfast is located along the picturesque Four Mile Creek just 8.4 miles from the Glenwood Hot Springs Pool. It is surrounded by an expanse of green, natural space perfect for pleasant strolls. There are also plenty of comfortable outdoor sitting areas. A hot breakfast is offered in the morning in the main dining room. In the valley just a short drive away is Sunlight Mountain Resort Ski Area with great skiing in the winter and excellent hiking after the snow melts.

A famous winter destination for travelers throughout the country, Aspen’s four impressive ski mountains make up its beautiful surroundings. Nestled in the heart of the White River National Forest, this area is a mecca for winter sports, popular for skiing and snowboarding. While hitting the slopes is the area’s most beloved attraction, visitors can also explore the wealth of high-end boutiques, interesting museums and wonderful hiking trails. Those who want to experience a different kind of outdoor adventure can also try cross-country skiing, snowshoeing and fly-fishing. Boasting even more activities in the summertime, visitors can go rafting, horseback riding and soar above the city in a hot-air balloon.
Explore the nearby great outdoors at the Horsetooth Mountain Open Space or get your adrenaline pumping by rafting on Cache La Poudre River with the Mountain Whitewater Descents Company. Visit Global Village Museum of Arts and Cultures to learn about folk art from all over the world. Take the kids to the Farm at Lee Martinez Park to learn about the farm life and play with baby farm animals.
On Friday evening, an NPS spokesperson responded to FOX31 and Channel 2's request for a comment. In an email, they said the park remains open. However, entrances to the park were closed due to road conditions. The spokesperson said the main entrance gates were closed Saturday night past Beaver Meadows Visitor Center and near the Fall River Entrance. The gate near the Grand Lake Entrance on the park's west side was closed Saturday morning due to road conditions, the spokesperson said.
Another one of the state’s most popular skiing and snowboarding destinations, Steamboat Springs may be a winter wonderland during the chillier months of the year, but the summer brings an endless landscape of green dotted with brilliant wildflowers. This is when this Wild West town really comes alive, with visitors enjoying fly fishing, inner tube rides and rafting trips on the Yampa River, endless scenic hiking and mountain biking trails, and natural hot springs that are ideal for soothing sore muscles afterward. If you can be here around late June/early July, you can attend the legendary annual Hot Air Balloon Rodeo and Art in the Park festival which boasts an extensive display of colorful hot air balloons along with some 50 artist vendors, live entertainment, food and drink vendors, and an interactive children’s art area.
Garden of the Gods Park is a registered National Natural Landmark comprised of 1,300 acres of magnificent views and stunning red sandstone formations. TripAdvisor® users voted Garden of the Gods the #1 park in the U.S. and #2 park in the world. Make sure to snap some selfies of you and your partner smooching under Kissing Camels and holding up Balanced Rock.
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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