You can climb and slide on the dunes or test your boarding skills cruising down the sand. On hot days, children and even adults enjoy splashing around in the Medano Creek that runs along the base of the dunes. Hiking trails run through the forest on the edge of the dunes. The four-wheel drive Medano Pass Primitive Road opens up some unique terrain, and car camping sites are located along the roadside. Regular camping is available at the Pinon Flats campground, which offers both tent and RV campsites.
The A.R. Mitchell Museum of Western Art and the many galleries in the creative district are bound to thrill art lovers, while the Southern Colorado Repertory Theater provides live entertainment. Outdoor enthusiasts can go camping, fishing, hiking and boating in the Trinidad Lake State Park, seek dinosaur tracks in the Comanche National Grassland, or go trout fishing on the Purgatoire River.
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 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.
If you and your valentine enjoy winter adventures, a mountain escape is perfect for a weekend away! Opt for your favorite resort or venture somewhere new to enjoy outdoor winter activities during the day, like snowshoeing, skiing and skating, and relax at night with drinks and hot tubbing. Make the weekend extra special with a horse-drawn carriage ride to dinner. Find a Colorado cabin perfect for any getaway here .

The mountain biking trails around Fruita are some of the top-rated trails in the state. Most notably are the 18 Road Trails, with the infamous Zippity Do Da trail, and the Kokopelli Loops. This is desert terrain, with trails that run along the tops of ridges and everywhere in between or alongside cliff ledges with views over the Colorado River. This area has, for many mountain bikers, become an alternative to Moab, Utah. During the spring, you can even combine sports; mountain biking in Fruita one day and skiing at Beaver Creek or Vail - just over two hours away - the next.


Once famous as a gold-rush outpost, the modern city of Golden has diversified by leaps and bounds and now offers visitors a great mix of outdoor, cultural and historic attractions. Go back in time to the gold mining era on a tour of Historic Downtown, where you will find several museums including the Golden History Center and the Colorado School of Mines Geology Museum.
The capital of Colorado, Denver is a sprawling metropolis that is home to the Denver Art Museum, landmark 19th-century buildings, and the mansion of Titanic survivor Molly Brown. It is also a jumping off point for various ski resorts in the mountains, offering a great variety of activities that range from spending time outdoors amidst nature to exploring the downtown urban scene.

To reach Rocky Mountain National Park, many travelers fly into Denver International Airport (DEN) and either rent a car and drive the 80-some miles northwest to Estes Park or take the Estes Park Shuttle, which runs frequent routes from the airport to Estes Park for $45 one-way and $85 round-trip. There is no public transportation available between the airport and the park.
The Olives Aspen restaurant, run by Chef Todd English, serves Mediterranean-inspired cuisine with a local flare. The Lobby Lounge features beautiful views, and offers a light menu with cocktails, aperitifs, wines, and beers. Doubles from $725 per night. The hotel is located 10 minutes from the Airport. You can contact the hotel to arrange transportation. Doubles from $725 per night. The hotel is located 10 minutes from the Airport.
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. 
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.
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.
“The law is clear: if the federal government is shut down, our National Parks must also be closed to protect public safety and pristine spaces. It is not acceptable to use FLREA (Federal Lands Recreation Enhancement Act) funds to keep the parks open, and the Department of the Interior’s actions likely violate appropriations law,” McCollum said in a statement.

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.
A home base for travelers visiting the Rocky Mountain National Park, Estes Park is less than a 2-hour drive from Denver. The park offers 355 miles of hiking trails paired with stunning vistas and landscapes, from snow-capped mountains to picturesque lakes and valleys, where those who crave adventure will find a myriad of outdoor adventures. Estes Park itself is a great area to explore, as visitors can meander the Riverwalk in Downtown Estes Park or hop on the Estes Park Aerial Tramway to the top of a small peak. Estes Park boasts a variety of shopping and dining experiences, while movie enthusiasts will want to stop by the world famous Stanley Hotel that was the inspiration behind Stephen King’s “The Shining.”
Disclaimer: JACUZZI® is a registered trademark owned by Jacuzzi Inc. The use of the JACUZZI® trademark on this website is for informational purposes only. There is no relationship, connection or affiliation between this website and Jacuzzi Inc. or its related companies. As hotel rooms and amenities can change, please check with each individual accommodation property before making travel plans to ensure that the hotel room you have booked includes an authentic JACUZZI® brand hot tub. 
A sanctuary just for mature audi­ences all year long, Stonebrook Resort on Fall River offers plenty of peaceful settings, from seclud­ed outdoor hot tubs overlooking the river to private hiking trails that lead to Rocky Mountain National Park, just 2 miles away. Downtown Estes Park, with snug restaurants, breweries and wineries well-suited for a couples’ night out, is just 2 miles the other way.
Fall River Cabins features five luxurious Cabins located on the banks of Fall River. We are also excited to announce the brand new Stream Suites building which will be located across the river from the 5 Cabins. Book with us and have access to over 4000ft of fall river, private hiking trails, wonderful service and much much more. Come ready to relax, indulge, & explore.
After an amazing day viewing the natural beauty of Garden of the Gods and Pikes Peak-America’s Mountain, your significant other and you can relax by having a glass of wine and dinner in Old Colorado City. Old Colorado City was founded in 1859 and features old brick structures, quaint alleyways, boutiques, galleries and restaurants with cuisine from all over the world. It makes a perfect setting for a romantic dinner for two.
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. 
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.

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.


Every summer, Aspen gets taken over by classic music lovers during the renowned Aspen Music Festival and School with more than 300 concerts. Learn about Aspen from Dean Weiler during one of his popular Aspen Walking Tours and pay respect to John Denver at the John Denver Sanctuary you will pass by while hiking the picturesque Rio Grande Trail. Next read: best Aspen restaurants.
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.
            “By 1900, the growing national conservation and preservation movement, led by Theodore Roosevelt, Gifford Pinchot, and John Muir, advocated an appreciation for nature. The Estes Park Protective and Improvement Association fostered local conservation efforts. "Those who pull flowers up by the roots will be condemned by all worthy people," they warned. In 1909, Enos Mills, a naturalist, nature guide, and lodge owner, championed the creation of the nation's tenth national park. He hoped that: "In years to come when I am asleep beneath the pines, thousands of families will find rest and hope in this park." Unleashing his diverse talents and inexhaustible energy, he spent several years lecturing across the nation, writing thousands of letters and articles, and lobbying Congress to create a new national park. Most civic leaders supported the idea, as did the Denver Chamber of Commerce and the Colorado Mountain Club. In general, mining, logging, and agricultural interests opposed it. On January 26, 1915, President Woodrow Wilson signed the Rocky Mountain National Park Act.”
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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!

Spring Break is here and Rocky is getting visitors from all over the country. Maybe that's why these Sandhill Cranes decided to stop by out in Moraine Park! They are probably Grus canadensis tabida, or "Greater Sandhills," and part of the Rocky Mountain population. These birds winter in New Mexico and then move on up into NW Colo, Wyoming, Idaho and Montana (but not Nebraska). Good thing they had a nice protected place to stop and take a break! (The cranes at Kearney Nebraska are Grus canadensis canadensis - "Lesser Sandhills") kb/ks
Colorado’s biggest city, Denver offers an eclectic mix of attractions, from its trendy eateries to its impressive museums. A combination of a cityscape and natural surroundings, Denver is more than just a base to explore Colorado’s other outdoor treasures. Boasting a laid-back ambiance, this Mile High City is centered around an outdoorsy culture of locals that welcome visitors to sample their delicious craft beer, vibrant shopping streets and beautiful hiking paths. Spend a day at the Denver Art Museum, Denver Museum of Nature & Science or the Denver Zoo, then browse Larimer Square and catch a game at Coors Field.
Colorado Springs stands out from its mountainous counterparts because it's not a ski destination. But what the city lacks in slopes it more than makes up for in incredible hiking opportunities. Mix that in with a good helping of small-town charm and a diverse array of attractions (including the U.S. Olympic Training Center) and Colorado Springs has all the makings of a great vacation. Read More »
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.
Located in in southwestern Colorado, Mesa Verde is home to the famous cliff dwellings of the ancient Anasazi people. It is one of the most significant archeological preserve of Native American culture in the US. In the 12th century, the Anasazi start building houses in shallow caves and under rock overhangs along the canyon walls. The most famous of these is Cliff Palace. The Ancient Puebloans constructed it from sandstone bricks, and mortar made from ash, clay and water. It encompassed 150 rooms and 76 open areas. Climatic change and increased population placed the communities under stress and by the late 1270s, the Ancestral Puebloan population began migrating to what is now New Mexico and Arizona.
Home to the Steamboat ski resort, Steamboat Springs is a city in Colorado’s Yampa Valley. One of the main attractions here are the geothermal hot springs, which people come to experience for its healing properties. The Old Town Hot Springs also has water slides and swimming pools, while the ski resort has six peaks including Mount Werner for the serious snowboarding and skiing enthusiast.
The nearest airport is Denver International Airport[91] and the closest train station is the Denver Union Station. Estes Park may be reached by rental car, shuttle or RTD bus.[91][98] During peak tourist season, there is free shuttle service within the park and the town of Estes Park provides shuttle service to Estes Park Visitor Center, surrounding campgrounds, and the Rocky Mountain National Park's shuttles.[91]
You won’t believe the powdery slopes, 14,000-foot peaks, and stunning scenery of Telluride until you see the town for yourself. This Colorado destination screams weekend getaway—there are dozens of hikes and even more things to do. For example, you could give paragliding a chance, or bring the whole group along for a food tour featuring Telluride’s best bites.

Pikes Peak – “America’s Mountain” is one of the most iconic and beautiful vacation destinations in the West. Rising over 14,000 (making it one of Colorado’s many 14-er’s) feet, Pikes Peak has inspired Americans, including Katharine Lee Bates – who wrote “America the Beautiful” after summiting, for generations. There are a number of ways to enjoy it on your Colorado vacation, including by bicycle (ask us about our exciting mountain biking / rafting packages!) Or ride the historic Cog Railway to the top, where a new visitor’s center is being planned. Our tip: try the donuts – they’re amazing! 
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 .
A comfortable reading and DVD library serves as the perfect place to relax with a book and a glass of wine, and there is free high-speed Internet throughout the property. The Wild Horse Inn is surrounded by incredible natural landscapes that offer an array of activities to partake in, from hiking, mountain biking, and climbing to boating, rafting and fishing, and various snow sports in the winter. The inn is located 1 hour and 30 minutes from Denver.
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.

Soak in the hotel’s hot tubs after a day of skiing or warm up in front of the crackling fire in the lounge before heading out to enjoy one of the many activities the area has to offer. Enjoy hiking, fishing, mountain biking, skiing, or snowboarding. Wildlife lovers will delight in all the birds and wildlife to be found in the region, and romantics can stargaze on clear nights.
The Olives Aspen restaurant, run by Chef Todd English, serves Mediterranean-inspired cuisine with a local flare. The Lobby Lounge features beautiful views, and offers a light menu with cocktails, aperitifs, wines, and beers. Doubles from $725 per night. The hotel is located 10 minutes from the Airport. You can contact the hotel to arrange transportation. Doubles from $725 per night. The hotel is located 10 minutes from the Airport.
The climate change study projects further temperature increases, with greater warming in the summer and higher extreme temperatures by 2050. Due to the increased temperature, there is a projected moderate increase in the rate of water evaporation. Reduced snowfall—perhaps 15% to 30% less than current amounts—and the elimination of surface hail, along with the higher likelihood of intense precipitation events are predicted by 2050. Droughts may be more likely due to increased temperatures, increased evaporation rates, and potential changes in precipitation.[53]
Grand Lake is arguably the biggest attraction in the town of Grand Lake, offering boating, sailing, fishing, swimming, kayaking and yachting – it even hosts a Regatta Week in early August. This is also where you’ll find the biggest Fourth of July fireworks display in all of Colorado, as well as a wealth of popular tourist spots like candy shops, old time photo galleries and saloons, an array of gift shops and even mini-golf courses. Plus, as it sits near the western entrance of Rocky Mountain National Park, you’ll be steps away from one of the country’s most spectacular wildlife-filled parks too.
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 Olives Aspen restaurant, run by Chef Todd English, serves Mediterranean-inspired cuisine with a local flare. The Lobby Lounge features beautiful views, and offers a light menu with cocktails, aperitifs, wines, and beers. Doubles from $725 per night. The hotel is located 10 minutes from the Airport. You can contact the hotel to arrange transportation. Doubles from $725 per night. The hotel is located 10 minutes from the Airport.
From luxury condos in major cities, to furnished beach rentals, cozy ski cabins and more, Tripping.com offers the widest variety of unique accommodations for your next trip. Whether you’re seeking a lakefront cabin for a quick getaway, a modern apartment in New York City, or a beachfront property with sunset views in Hawaii, Tripping.com can help you find and book it all.
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. 
Located south of the town of Avon, Beaver Creek is a family-friendly town that combines the convenience of a modern resort with the quaint charm of an alpine village. The long list of activities available here includes outdoor fun like fly fishing, hiking, wine tasting and panning for gold, in addition to mountain 4×4 tours, rafting, skiing and golf. The town also hosts fun activities like movie nights under the stars, kids activities and various group tours.
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 

Located around 65 miles (105 km) west of Denver, Breckenridge is a historic mining town with a small population that increases tenfold during skiing season. There are more than 2,300 skiable acres on the four mountain peaks that make up Breckenridge’s southwestern border. A newly opened gondola in the north side of town takes skiers up to the summit of the nearly 13,000-foot (4,000 meter) high Peak 8, Breckenridge’s original ski mountain. With more than 250 buildings listed on the National Historic Register, cultural attractions in gold-rush town are worth exploring as well.
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. 
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. 
Loveland continued its expansions during the 1990’s. In 1990, Yan was contracted to install Loveland’s first fixed-grip quad. The lift serves intermediate and expert bowl terrain to the right of Chair 4. Due to increased skier numbers, in 1995, Loveland decided to enlarge the Basin lodge to its current size. This drastically increased the number of people the building could accommodate. The following year, chair 3 was replaced by a Poma quad chair, doubling the lift capacity at the Valley.

For mountain bikers, Colorado is a haven, with great trails all over the state. Unfortunately, the mountain climate limits the season in many areas. But the town of Fruita, near Grand Junction, has the climate to enable you to stretch out your mountain biking season through the shoulder seasons and into the winter months. It's also a quirky little town with enough character to make you want to stay a while and return.

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.
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 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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