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.
Enos Mills, the main figure behind the creation of Rocky Mountain National Park, enjoyed walking to Lily Lake from his nearby cabin. Wildflowers are common in the spring and early summer. In the winter, the trail around the lake is often suitable for walking in boots, or as a short snowshoe or ski. Other lakes in the Wild Basin include Chasm Lake, Snowbank Lake, Lion Lakes 1 and 2, Thunder Lake, Ouzel Lake, Finch Lake, Bluebird Lake, Pear Lake, and Sandbeach Lake. Many of the lakes have backcountry campsites. Waterfalls include Ouzel Falls, Trio Falls, Copeland Falls, and Calypso Cascades.[47]
Breckenridge is justifiably famous as one of the best ski resorts in the country, but spending a little time seeking out the off-piste charms of the town can be extremely rewarding. You can explore the thriving arts and culture scene or learn some Breckenridge history on a tour with a local expert – popular choices include the Historic Tour, the Haunted Tour and the Gold Mining Tour. In summer you can go hiking, biking, fishing, paddling and rafting, while in winter everyone heads to the slopes to enjoy world-class winter sport activities and ride the highest ski lift in the country. Things to Do in Breckenridge
Dial (970) 586-1222 for a recorded message on the status of Trail Ridge Road. You may not know that our mountain makes its own weather, so it is not uncommon to have snow in July or August at the top of Trail Ridge Road. Such weather will only last for a few hours to a day, but if you are planning to cross over Trail Ridge Road, weather may hamper your travel. You also may find the road closed due to weather in early June and September/October.
Enos Mills, the main figure behind the creation of Rocky Mountain National Park, enjoyed walking to Lily Lake from his nearby cabin. Wildflowers are common in the spring and early summer. In the winter, the trail around the lake is often suitable for walking in boots, or as a short snowshoe or ski. Other lakes in the Wild Basin include Chasm Lake, Snowbank Lake, Lion Lakes 1 and 2, Thunder Lake, Ouzel Lake, Finch Lake, Bluebird Lake, Pear Lake, and Sandbeach Lake. Many of the lakes have backcountry campsites. Waterfalls include Ouzel Falls, Trio Falls, Copeland Falls, and Calypso Cascades.[47]
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]

In winter you can try cross-country skiing and snowmobile trails and after an energetic day out there is nothing better than a soak in one of the natural thermal springs. You can visit the Buena Vista Heritage Museum or go on a Ghost Town adventure, visit several working art studios and galleries, or quench your thirst at a local brewery. Things to Do in Buena Vista
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.
If you are looking for romantic mountain getaways in Colorado, Taharaa Mountain Lodge in Estes Park, Colorado is a beautiful country lodge just minutes from the Rocky Mountain National Park. Set on five acres, the lodge offers vacationers nine rooms and nine suites with stunning views of the surrounding mountains. Guest room decor incorporates natural elements from the region. Each room and suite has floor-to-ceiling windows, fireplace and a panoramic outdoor deck, perfect for savoring the view. Ask for one of the suites with a Jacuzzi tub if you are planning a romantic getaway or a honeymoon in Colorado. The lodge has a sauna and a cozy massage room where guests can enjoy a variety of treatments, such as aromatherapy, hot stone massage and facials. Rooms start at $159 per night. Delicious morning breakfast and evening happy hour are included in the cost of your stay.

Hot Tubs, Woodstoves, Secluded, Outdoor Fireplace for campfire, WiFi.  Charming, pet friendly, private vacation cabins off Hwy 7 in Allenspark and Raymond, conveniently located between Lyons and Estes Park.  Choose directly on the Middle St Vrain River OR on spacious, wooded acreage bordered by the famous crystal clear Willow Creek.  Year round-Great Value!  Hideout Cabins Details
Colorado Springs, nestled at the foot of the majestic Rocky Mountains, offers spectacular scenery and amazing opportunities for a private, quiet, and romantic getaway. Book a murder mystery or wine and dinner trip in the Scenic Vista dome car on the Royal Gorge Railroad. This glass-topped car skims along the base of the narrow canyon along the Arkansas River. For an intimate view of the astonishing grandeur of this area, spend some time at the Royal Gorge Bridge and Park soaring in a gondola or on a zipline. For a bonus adrenaline rush, take a hand-in-hand stroll over the quarter-mile Bridge, suspended 955 feet over the tumbling river. Stop for breakfast or lunch at the French-inspired La Baguette Bakery and Cafe and enjoy a seasonally inspired menu. Share some sweet and savory fondue dipping sauces over an amorous dinner in the intimate interior of The Mona Lisa.
Wildflower-lovers are never disappointed in June and July when the meadows and hillsides are splashed with botanical color. Autumn visitors can relax among the golden aspens or enjoy the rowdier antics of the elk rut during mating season. And those brave enough to venture into the cold during the winter are treated to snowscapes unlike any other, as the park is open year-round.
The rooms here are Euro-sexy, with dark, thick, exposed beams and spacious, mirror-lined bathrooms. The spa is one of the best in Vail Valley, with a beautiful indoor-outdoor pool, fresh spa water and tea easily accessible and multiple hot tubs, both inside and out. Sit in the bubbling, warm water with a cup of tea while snowflakes drift around you.  

Telluride offers the quintessential Colorado mountain town experience. Not only are its streets lined with grand Victorian buildings, but it has become a hub for adventurers, athletes, and artists of all types, nestled in an isolated box canyon, far from the chaos of modern life. While there’s no skiing this time of year, visitors can still take a ride on the gondola up the mountain to get a bird’s eye view of the town and the breathtaking surrounding landscape. There’s also the opportunity to hike to the state’s longest free-falling waterfall, Bridal Veil Falls, enjoy fantastic fishing, golfing and biking. This little town is big when it comes to festivals too, with the annual Bluegrass Festival bringing a multitude of bluegrass bands to the area to enjoy the sun and the tunes in the outdoor amphitheater.

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.
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.
If you’re interested in visiting the iconic archaeological sites in Mesa Verde National Park, a trip to Durango is in order. This southwestern Colorado city is the closest town to the Puebloan cliff dwellings, and even offers convenient day trips for travelers who are strapped for time. While you’re in town, take the Million Dollar Highway through the San Juan National Forest for some of the best views in the region.

With over 1,800 acres of skiable terrain in Beaver Creek, it’s no wonder this resort town is a top choice for a weekend trip in Colorado. Beaver Creek is home to the Birds of Prey downhill course, too—a difficult run that’s often included in World Cup races in early December. Not up to the challenge? No worries. There’s plenty more to do like catching a show at the Vilar Performing Arts Center or hanging out at the Beaver Creek Resort. Swing by in the afternoon for a taste of their fresh-baked (and free) chocolate chip cookies.
Colorado's scenic terrain draws millions of travelers looking to get swept up in its natural splendor. With a bevy of cities and towns, each with its own unique outdoor offerings, cultural attractions and general Colorado charm, it may be difficult to choose the best place for your next vacation. U.S. News took into account a number of factors, including the variety of attractions as well as the opinions of experts and travelers, to determine the Best Places to Visit in Colorado. Got a favorite? Cast your vote to help determine next year's list. 

Just outside the towns of Grand Junction and nearby Fruita is Colorado National Monument. A scenic road snakes its way through some outstanding scenery. This is not typical mountain scenery, but a landscape of huge rock spires, cliff walls, canyons, and desert-like surroundings with small trees and scrubby bushes. Most people drive through the monument along Rim Rock Drive and stop at the lookouts that peer over the landscape below. The road is also a popular road biking area, with hearty souls peddling their way up to the lookouts. A number of day hikes access some scenic areas of the monument, most of which involve moderate elevation changes that range from approximately 300 feet to more than 1,000 feet.

“This isn’t a furlough for us,” Oropeza said. “There are definitely folks who, if this continues into next week, they’ll have to forfeit their commitment. Some are exploring applying for other jobs. They have student loans, they have car payments and other bills. …There are ripple effects this is having down the road. Our seasonal contracts, we have to have our contracts for summer seasonal work signed soon. All these things are getting backlogged.”
Just a 5-minute stroll from downtown Estes Park, Fall River Village offers 66 luxury accommodations, including 60 two bedroom and two bathroom condos, a honeymoon suite, four three bedroom and four bathroom townhomes and a four bedroom townhome with panoramic views of the Continental Divide. Property amenities include a heated, outdoor pool, year-round, outdoor hot tubs, a community room, fire pit and grill areas as well as an outdoor recreation area with yard games and a hammock.
There's more to Michigan than its natural legacies. Ann Arbor's University of Michigan is a must-visit for its Law Quadrangle, the Power Center for the Performing Arts, Natural History Museum, and a series of Gothic structures. One of the longest suspension bridges in the world is the Mackinac Bridge, which joins the Lower Peninsula at Mackinaw City to the Upper Peninsula at St. Ignace. Frankenmuth in mid-Michigan is an interesting replica of a German town, where visitors make a customary stop at Zehnder's or The Bavarian Inn, known for their luscious fried chicken.
An excellent vacation destination for visitors who are ready to hit the slopes, winter enthusiasts flock to Telluride every year for its 1,700 skiable acres that cater to both experts and novices alike. Visitors flock to Town Park on the southeast edge of town for its abundance of activities available, such as swimming pools, tennis courts, fishing ponds and campgrounds that are popular for the city’s annual festivals and events. Bear Creek Falls and Bridal Veil Falls offer a variety of scenic hiking trails, while the Telluride Historical Museum and Historic Sheridan Opera House are two cultural attractions that shouldn’t be overlooked.
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]

Remnants of Breckenridge's history as a mining hub give the town an aesthetic that is simply darling. Couple that with the Rocky Mountains that serve as the town's backdrop and you've got a ski destination for the books. When the powder melts, the verdant vegetation that floods the trails make Breck (as locals call it) magical. What's more, the beer scene is an attraction in its own right. Read More »
Guest rooms at both lodge buildings are tastefully decorated and fully equipped with the necessary amenities for absolute comfort, including private bathrooms with showers and soaking tubs, stone fireplaces, and flat-screen televisions. The inn is situated within walking distance of the town’s restaurants, bars, and clubs, as well as other entertainment and events that happen on a regular basis. The Minturn Inn is located two hours from Denver.
Colorado’s only Relais & Chateaux dude ranch offers a seemingly endless list of things to do, but creature comforts abound, too — from the elegant Western accommodations nestled in aspen groves to the haute mountain cuisine that has been hailed by Bon Appétit and Gourmet. In addition to adult weeks offered August through October, Home Ranch in Clark also hosts yoga and horse­back-riding retreats, perfect for girlfriend getaways.

The Experience: While news just broke that the old-timey train that travels along the mountainside through Pikes Peak will be closed for repairs for the rest of 2018, the nearby town of Manitou Springs should definitely stay on your bucket list. This resort town, located outside of Colorado Springs, is a true gem, complete with 1000-year-old Anasazi (the Ancestral Puebloans) cliff-dwelling ruins in the Mesa Verde National Park and a Victorian-era castle museum and tea room. Stay at the quaint Holden House bed and breakfast.
Couples can share snowy adventures together, try out new activities, or split up and go different directions during the day.  Meals with other engaging guests liven the conversation, and the dining room is always filled with laughter. Leisurely afternoon naps or late night soak in the hot tub give couples a chance to retreat from it all and focus on each other.
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]
Overlooking the scenic Beaver Creek Mountain, Park Hyatt Beaver Creek is a luxury Colorado resort and spa where guests can experience the vacation of their dreams. From breathtaking mountain views to championship golf courses to exquisite cuisine, Hyatt’s Beaver Creek ski resort offers the perfect year-round Vail Valley mountain escape with premium amenities, such as ski in and ski out access, a year-round heated outdoor pool, and an outdoor fire pit for roasting s’mores.
If you needed a reason to visit Keystone this summer, here are several: Cupcakes and Canvases, Bike-In Movies, Kidtopia Kids Theatre, festivals such as Snake River Festival and Cirque D’Wheels, Model Boat Regata. If those don’t keep you busy, try Adventure Point Summer SNOW Tubing Hill, Kidtopia Play Park, Lakeside SUP, paddle boating, kayaking, GPS Geo-Cache Adventure, Keystone Science School Day Camps, miniature golf and dinner wagon rides. There are plenty of freebies, too, including a free scenic ride for kids 12 and under and if you’re staying at the resort, the Kidtopia Children’s Theatre in the Quaking Aspen Amphitheatre is free on Fridays.

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.


If you wish to have a romantic dinner outside of the hotel or resort you are staying at in Colorado Springs, you have to go to the Pepper Tree Restaurant. Its stylish architecture makes the restaurant one of the most beautiful in Colorado. You can enjoy spectacular views of the city skyline from the restaurant while feasting on a romantic dinner with your love. The restaurant serves high quality seafood, steak,s and legendary wines. Dining at the Pepper Tree Restaurant is a romantic and memorable culinary experience.

Georgia peach, coffee addict, and Bananagrams champ (in no particular order), Olivia is a travel writer and designer based in Central America. She has a particular affinity for road trips to warm Southern cities and down the California coast, with frequent pit stops for local fare at roadside stands. Follow her on Instagram @olivia.ashra for lots of nature pics and keep up with her travels at therecouldbeblackberries.com.


Colorado is a year-round destination that piques the imagination and inspires the soul with its dramatic landscape and natural beauty. The state is nothing less than stunning, with a diversity that ranges from the majestic Rocky Mountains to the rolling hills, rivers, streams, and high desert of the Colorado Plateau. Mountain towns beckon skiers, hikers, climbers, mountain bikers, and outdoor enthusiasts of all types, but are also great places to soak up some tranquility and enjoy the mountain vibe. Scenic drives through parks and along state highways are some of the best ways to see the amazing sites that the state has to offer. Remnants of the cultures that inhabited the area and the dinosaurs that once roamed the land can be seen and better understood by visiting some of the national parks and monuments. Colorado is an unbeatable destination that will make you rethink your future travel plans.

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
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.
Still haven’t packed enough into your Colorado vacation? Make time to see some of the great Colorado mountain attractions — tour a ghost town near Aspen, sail above the mountains in a balloon over Breckenridge, rock out at a music festival in Telluride, check out the nightlife scene in Vail and try your luck at a casino in Black Hawk, Central City or Cripple Creek.

Below 9,400 feet (2,865 m), temperatures are often moderate, although nighttime temperatures are cool, as is typical of mountain weather.[49] Spring comes to the montane area by early May, when wildflowers begin to bloom. Spring weather is subject to unpredictable changes in temperature and precipitation, with potential for snow along trails through May.[49] In July and August, temperatures are generally in the 70s or 80s °F during the day, and as low as the 40s °F at night.[49] Lower elevations receive rain as most of their summer precipitation.[48]


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.
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.

The unspoiled beauty of Rocky Mountain National Park draws thousands of visitors every year. With over 50 placid lakes and babbling streams, this is a popular fishing destination for both locals and visitors alike. In order to fish within the park, please note that you will need a valid Colorado fishing license. You can trek through over 355 miles of hiking trails or stick to the park roads for a bicycle ride suitable for all ages. After exploring, head to the Visitor Center to learn about the animals and plants you encountered on your hike or bike ride. If someone in your group loves horses, consider visiting the Glacier Creek Stables for the opportunity to see the area on four legs rather than two.
A perfect destination for travelers who crave nature, Colorado Springs appeals to visitors who are also looking for cultural attractions to fill their itinerary. Surrounded by the majestic mountains of the Colorado Rockies, Colorado Spring’s beautiful scenery is only highlighting by the city’s quirky art galleries in Manitou Springs, airplanes at the Air Force Academy, world-class Olympic Training Center and the rugged Old West feeling found in Old Colorado City. There are plenty of outdoor activities for visitors indulge in, of course, including nearby Pikes Peak, Garden of the Gods and Red Rock Canyon.
Trail Ridge Road will not open until at least Memorial Weekend but there are many amazing areas open year round in the park. Heavenly Valley is the one place in the park where sledding is allowed but you must bring your own tube or sled. Cross-country skiing is incredible with so many trails to choose from and snow shoeing is a great way to explore new areas. Stop at one of the visitor centers as you enter the park to find out what areas are open and it is always best to call ahead for weather and road conditions. Check forecasts before you go at weather.gov and insert "Trail Ridge, CO" for the location. For information about Rocky Mountain National Park call 970-586-1206 daily 8 a.m. to 4:30 p.m. (Mountain Time).

In the winter, try the “Ski-In/Ski-Out” Treatment—the only one of its kind at a ski resort. In 30 minutes, professionals submerge your feet in a warm, exfoliating bath and go to work to increase circulation. They relieve the tension with a hot stone massage to get you back into action. This treatment is designed perfectly to soothe you after a day of adrenaline and activity, and vamp you back up for more.
Diana Rowe is a freelance writer living in suburbia Denver, 20 minutes from downtown and under an hour to the Colorado Rockies. Finding the perfect hotel, whether for leisure or business travel, is an important part of Diana’s travels. Her articles have been featured in Global Traveler Magazine, Business Traveler, Away.com, TripAdvisor.com, Latitudes (American Eagle in-flight), American Cowboy, Persimmon Hill Magazine, Prevue Magazine, and Corporate & Incentive Travel Magazine. She’s also a blogger/writer for TravelingMom.com, TravelShark.com and Cvent.com. Catch up with Diana at www.dianarowe.com or follow her adventures at www.TravelingInHeels.com, Facebook fan page or Twitter @dianarowe
Cassie Abel, 28, of Denton, Texas, pulls her daughter Brynlee, 6, in a sled on a road that would normally be open to cars in Rocky Mountain National Park on Wednesday, Jan. 2, 2019. Abel's father-in-law, Shane Abel, 63, left, said he's frustrated a government shutdown nearly 2,000 miles away was hindering the family vacation.  (Photo: Trevor Hughes, Trevor Hughes-USA TODAY NETWORK)

There's more to Michigan than its natural legacies. Ann Arbor's University of Michigan is a must-visit for its Law Quadrangle, the Power Center for the Performing Arts, Natural History Museum, and a series of Gothic structures. One of the longest suspension bridges in the world is the Mackinac Bridge, which joins the Lower Peninsula at Mackinaw City to the Upper Peninsula at St. Ignace. Frankenmuth in mid-Michigan is an interesting replica of a German town, where visitors make a customary stop at Zehnder's or The Bavarian Inn, known for their luscious fried chicken.


The Elk are bugling and Fall is coming.  What a perfect time to come to Estes Park to see the Elk in their natural surroundings of Rocky Mtn National Park.  Within the boundaries of Rocky Mountain National Park, more than 100 peaks rise above 11,000 feet in altitude, including Longs Peak at 14,259 feet. These amazing mountains cradle the Estes Valley, providing residents and guests with incredible beauty and inspiration.

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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