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]
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.
The perfect blend of a picturesque main street with 2,358 acres of incredible skiing opportunities, Breckenridge is the oldest and largest town in Colorado’s famous Summit County. Take a tour of the 12-block downtown area and window shop through its quaint Main Street shops before strapping up your boots and heading to the famous Breckenridge Ski Resort. In the summer, take the ski ride lift up to find an array of hiking trails, while biking and golf are also popular activities. Host to numerous arts events throughout the year, this Certified Colorado Creative District has exciting public art spaces throughout the area in addition to a National Repertory Orchestra and Backstage Theatre.
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One of the country’s most beautiful natural area’s to explore in the United States, the Rocky Mountain National Park is an ideal vacation destination for those who crave outdoor adventures and awe-inspiring vistas of mountains, lakes and valleys. With 355 miles of hiking trails, ranging from flat lakeside strolls to steep mountain climbs, there are corners of this park that appeal to everyone. Take a scenic drive and spot diverse wildlife, such as Elk, Mule Deer and Bighorn Sheep, or go hunting for one of the 30 postcard-worthy waterfalls views. While there is no lodge inside the park, visitors can find campgrounds to pitch a tent and spend a night under the stars.
Trail Ridge Road is 48 miles (77 km) long and connects the entrances in Grand Lake and Estes Park.[92][93] Running generally east–west through many hairpin turns,[5] the road crosses Milner Pass through the Continental Divide[93] at an elevation of 10,758 ft (3,279 m).[92][94] The highest point of the road is 12,183 feet (3,713 m),[93] with eleven miles of the road being above tree line which is approximately 11,500 feet (3,505 m).[92] The road is the highest continuously paved highway in the country,[93] and includes many large turnouts at key points to stop and observe the scenery.[92]
A nature lover’s paradise, Colorado is filled to the brim with beautiful landscapes, offering travelers over 300 days of sunshine to come and explore its diverse areas. From the majestic Rocky Mountains to picturesque prairies and cosmopolitan cities, Colorado is surrounded by vibrant outdoor attractions, diverse wildlife and scenic byways just begging to be explored. Whether you hit the slopes at a luxury ski resort, hike the trails at a National Park or take a scenic drive through the countryside, Colorado has so many great things to see and do throughout the year. Perfect for families, couples and solo travelers who are looking for an outdoor adventure, read on to discover the best places to vacation in Colorado.
Ready to get romantic?  Stop in and enjoy the Armstrong’s on-site speakeasy-era jazz club,  Ace Gillett’s Lounge, located in the basement of the Armstrong Hotel. An underground shadowy enclave with nearly 100 years of history, order from their signature drink of martinis, wine and local brews, and kick back with your sweetheart in two cozy rooms featuring live jazz music 4 nights a week.
Hands down, Crested Butte is my favorite summer destination in Colorado. In addition to world-famous mountain biking and hiking (the views from Snodgrass Mountain are second-to-none), don’t miss the four-week long Crested Butte Music Festival (with the free Divine Family Young People’s Concert July 13, 20 and Aug. 3) and the Wildflower Festival (July 8-14, 2013) where you’ll swear you climbed onto a Monet canvas of mad, extravagant colors. Last winter, CBMR purchased the Coke Zero Gravity BagJump; a 50 feet by 50 feet bag of air for guests to tube and ski and ride into. Come summer, the resort will be setting up two levels of scaffolding at 10 feet and 20 feet for kids and adults alike to jump into the cloud-like bag of air. The resort will also be building a dirt jump for biking enthusiasts to practice their jumping skills with their bicycles for an added adrenaline rush, as if the 25 miles of trails in the Evolution Bike Park isn’t enough. For younger kids, check-out the Trailhead Children’s Museum and big kids (must weigh at least 70 pounds) can try the Crested Butte Zipline Tour, which includes five zip lines ranging in length from 120 – 400 feet connected by features or “events” such as suspended wood bridges and towering platforms. P.S. A few years ago, my kids did Kids Nature Camp at world-renown Rocky Mountain Biological Laboratory in nearby Gothic, Colo. and still rave about it.
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. 
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.
There are several Front Range towns that have fun winter attractions that are worth experiencing. Next time you’re passing through Idaho Springs, relax at Indian Hot Springs or go snowshoeing in the Arapaho National Forest. Georgetown hosts ice races on its frozen lake. While in Evergreen, make use of the giant frozen lake by ice skating or fishing.
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