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] 
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.
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.
Outdoor adventurers, skiers, nature lovers and history buffs a return to Colorado year after year for memorable vacations surrounded by spectacular scenery. Colorado is famous for its first class ski resorts such as Aspen, Telluride and Crested Butte and elegant cities packed with cultural attractions, including Denver, Boulder, Fort Collins, Colorado Springs and Estes Park. You can get back to nature in the beautiful state parks where you can admire everything from towering sand dunes and waterfalls to gushing white water rapids and historic scenic railways. Here are the best places to visit in Colorado.
Tucked away in Wondervu in the heart of Golden, Colorado, Eldora Lodge is a lovely mountain ski lodge and retreat that offers comfortable accommodation and a plethora of outdoor activities. Guests can enjoy bed and breakfast lodgings in cozy log cabins, which are fully equipped with en-suite bathrooms and modern amenities, including climate control and flat-screen televisions.
Garden of the Gods, a registered National Natural Landmark, is a unique landscape of jagged stone towers and fins jutting up 300 feet from the earth, and giant balanced boulders and rock piles dotting the landscape, with distant mountains completing the scene. Fifteen miles of trails, most of which are short and easy, allow you to get up close to the dramatic rock formations and wander through the surreal scenery. The park is a popular area for rock climbing, but other activities in the park include road biking in designated biking lanes, mountain biking, horseback riding, and Jeep and Segway tours.
Bedrooms enjoy air-conditioning and central heating, mini refrigerators, and free Wi-Fi while private bathrooms have rain showers and Jacuzzi whirlpools. A delicious full English breakfast is served each morning in the inn’s elegant dining room, and lunch and dinner can be taken at the inn on request. The inn is within walking distance of several excellent restaurants in Colorado Springs as well as other entertainment.
Toast your love over a five-star meal with 10-star views. Poised at the tip-top of Telluride, Allred’s is reached by a romantic gondola ride, and the dining room reveals epic views of alpenglow peaks and the valley floor thousands of feet below. Make an early reservation to snag a window table (they’re first come, first served), then clink peach-jalapeño margaritas while savoring Chef Mike Regrut’s upscale Colorado cuisine. More mountain-top dining >>
Cushion plants have long taproots that extend deep into the rocky soil. Their diminutive size, like clumps of moss, limits the effect of harsh winds. Many flowering plants of the tundra have dense hairs on stems and leaves to provide wind protection or red-colored pigments capable of converting the sun's light rays into heat. Some plants take two or more years to form flower buds, which survive the winter below the surface and then open and produce fruit with seeds in the few weeks of summer. Grasses and sedges are common where tundra soil is well-developed.[73]
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.
By day, this forested hot spring just north of Steamboat Springs teems with families splashing in the all-natural pools. After dark, it becomes exclusively adults-only — and clothing-optional; don’t be surprised if you spy a cowboy or two taking a dip au naturel. Secluded hillside cabins and train cabooses are within sprinting distance from the pools, for those cooler Colorado nights.
Although Aspen is best known as a winter sports destination, this lovely little town in the heart of the White River National Forest is a brilliant year-round destination for active adventurers, festival lovers and arts aficionados. Besides downhill skiing, you can try cross-country skiing, snowshoeing, snowmobiling, ice skating and dog sledding, before rounding off your day with Après-Ski cocktails, local craft beers or a delicious meal.
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.
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.
Experience the high country the old fashioned way — atop a horse. This is a wonderful way for older children to see more alpine country than possible on foot. There are two stables located within the park: Glacier Creek Stables and Moraine Park Stables. Approximately 260 miles of trails are open to horse use, which makes up more than 70 percent of the total trail network in the 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]
