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]
Buena Vista is an historic mining and railroad town that resoundingly lives up to its Spanish name meaning “good views” – you are surrounded by towering mountain peaks that provide a wonderful year-round playground for adventure seekers. The area boasts some of the best river rafting adventures in the country and you can also go hiking, biking, horseback riding, fishing and zip-lining.
^ Montana State University states in their profile of Rocky Mountain National Park that there has been an increase of 2.5 °F (1.4 °C) in the average park temperature over "the past century" (charts show the period from about 1895-2010).[48] The National Park Service site states that the increase has been 3.4 °F (1.9 °C) over "the last century" (chart shows the period from about 1905-2010).[52]
Located only a 30-minute drive from Denver, Boulder holds its own with its abundance of lush parks and beautiful landscapes. A city with a hippie-like vibe, visitors who explore this area will be delighted to discover an array of shops, breweries and cafes. In addition to its thriving arts and cultural attractions, visitors can lace up their boots and head to the trails at Boulder Creek Path, Eldorado Canyon State Park and the Flatirons. Home of the University of Colorado, plenty of restaurants and drinking establishments are available to choose from, while visitors who are looking for a place to relax can also have a spot of tea at the Celestial Seasonings Tea Factory.
All rooms include large desks, 26-inch flat screen TVs, same day laundry and dry cleaning service. Stay fit by working out at the fitness center which is open 24/7. The Corner Office Restaurant + Martini Bar serves a fresh global menu and creative cocktails. The hotel is located across the street from the Denver Performing Arts Complex, a block from the Colorado Convention Center and two blocks from 16th Street Mall. Rooms start at $249 per night.
Located 17 miles from the Winter Park ski resort and 16 miles from Vail, Frisco is the perfect small-town getaway. You can relive life as a miner in the Old West at Frisco’s historic park and museum or take a mountain bike ride that takes you over 55 miles of paved pathways. Strap on snowshoes or cross-country skis for a turn around the Frisco Nordic Center. During the summer, paddle or motor out to the Sentinel Island from the Frisco Bay Marina. Rent a cozy condo at Mountainside, or consider renting a lovely house on the Blue River. Warm up the evening with delicious farm-to-table fusion fare Italian-style at Bagalis Frisco.
Cripple Creek is best known as a historic mining and gambling town, but besides the fun and entertainment of its nine modern casinos, Cripple Creek offers diverse activities for all ages. You can satisfy your lust for adventure with white water rafting, river tubing, rock-climbing, mountain biking and off-road racing or explore the Trails of Gold network of hiking and biking trails through historic sites in the gold camp.
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 best time to visit Rocky Mountain National Park is from June to September when the snow is (mostly) melted and the hiking trails and attractions are accessible. Still, these four months are also the most popular times to visit, so if you'd rather experience RMNP in relative isolation and while wearing snowshoes or cross-country skis, visit between the months of October and May. Whether snow or sunshine, the park is open to the public 24 hours a day, 365 days a year, though some parts may be inaccessible.
No matter what time of year you choose to stay in Estes Park, you will find pleasant weather to suit the outdoor activities of the season. The coldest month is January, with an average high of 38 degrees – excellent skiing and snowboarding weather. July tends to be the warmest month of the year, with average highs reaching 78 degrees. This warmth, combined with the region's low humidity, makes for the perfect climate for hiking, biking, boating, and more. 
When it comes to the best weekend getaways in Colorado, Colorado Springs is a top choice with a little bit of everything—numerous hiking trails, interesting museums, an artsy historic district, and plenty of restaurants and breweries. It’s also home to Garden of the Gods, a National Natural Landmark featuring hiking, climbing, and stunning views at the foot of Pikes Peak.
Update on Jan. 14, 2019: A Rocky Mountain National Park spokesman said Monday the park began using recreation fees to temporarily pay about 10 percent of furloughed workers to clean up the park. They’ve been plowing roads, cleaning restrooms and collecting trash since Saturday. Other staff, such as law enforcement rangers, continue to work without pay during the shutdown. The park is expected to reopen to vehicle traffic on Tuesday, said Kyle Patterson, a Park spokesman who is on furlough.
