Precambrian metamorphic rock formed the core of the North American continent during the Precambrian eon 4.5–1 billion years ago. During the Paleozoic era, western North America was submerged beneath a shallow sea, with a seabed composed of limestone and dolomite deposits many kilometers thick.[54] Pikes Peak granite formed during the late Precambrian eon, continuing well into the Paleozoic era, when mass quantities of molten rock flowed, amalgamated, and formed the continents about 1 billion–300 million years ago. Concurrently, in the period from 500–300 million years ago, the region began to sink while lime and mud sediments were deposited in the vacated space. Eroded granite produced sand particles that formed strata—layers of sediment—in the sinking basin.[55]
Known as a world-class ski destination, Aspen is beautiful year around and offers activities and attractions for all ages. Skiers can challenge their skills on the magnificent steeps, slopes and glades of Aspen Mountain or Ajax, on rugged Aspen Highlands or enormous Snowmass. Take a 14 minute ride with the Silver Queen Gondola to the top of Ajax Mountain for the spectacular views of the mountain peaks, the city below and tall evergreens all around you. There are bluegrass concerts on Sundays.
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.
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 .
Colorado has one of the most diverse plant and animal environments of the United States, partially due to the dramatic temperature differences arising from varying elevation levels and topography. In dry climates, the average temperature drops 5.4 degrees Fahrenheit with every 1,000 foot increase in elevation (9.8 degrees Celsius per 1,000 meters). Most of Colorado is semi-arid with the mountains receiving the greatest amount of precipitation in the state.[64]
Another annual event in Estes Park is the Longs Peak Scottish Irish Highland Festival, which takes place the weekend after Labor Day in September. Like the Midsummer Festival, the Longs Peak festival features all sorts of traditional food, crafts, clothes, and activities, this time of Celtic heritage. There is also a parade through town, live music from bands around the world, and even a "Dogs of the British Isles" attraction that includes dog agility courses.
Stay up past your (kids’) bedtime at this grown-ups-only urban retreat that fuses art and sustainability. Side-by-side Victorian homes sit on the edge of downtown Denver, putting you close to the city’s vibrant dining and nightlife. Many rooms feature murals or paintings by local artists, so you can soak up some culture from your in-room whirlpool tub. There are eco-friendly perks throughout, like organic toiletries and gardens where the onsite chef grows herbs and veggies for your complimentary breakfast.

Adventure Ridge is the big news at Vail and mid-summer, the resort will implement several new activities, including a four-line 1,200-foot long zip line, two aerial ropes courses, and a kids zip line as well as a kids ropes course, climbing wall, rebound trampoline. Gore Creek Mini Golf offers family-friendly putting atop the Lionshead base area for the second summer season. Grab your family and try the  FREE bean bag toss, horseshoes or the new slackline park where kids of all ages can test their balance at a variety of levels. If your kids are age four and older, they can use digging tools and a map to uncover dinosaur bones and learn about prehistoric creatures. The FREE Bud Light Hot Summer Nights Concert Series on Tuesdays June 12-August 21 has become the social event of the season. If you have aspiring adventurers, the 4th annual KEEN Vail Kids Adventure Race on August 10 and 11 lets kids ages 6 through 14 experience the thrill of adventure racing with mountain biking, hiking, tubing, archery, a low ropes course, a zip line, a climbing wall, a Tarzan swing, a giant slip-n-slide and more.
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.
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.

With stunning Colorado surroundings and easy access to a national park, a visit to an Estes Park vacation rental will capture the whole family's imagination. Sitting at 7,522 feet above sea level, this town is a favorite Colorado getaway due to its proximity to the Rocky Mountain National Park, landmarks such as the historic Stanley Hotel, and a variety of galleries and family-friendly museums that are well worth a visit. Whether you're visiting in the summer or winter, our Estes Park cabin rentals are the perfect setting for an unforgettable trip. 
Another one of the state’s most popular skiing and snowboarding destinations, Steamboat Springs may be a winter wonderland during the chillier months of the year, but the summer brings an endless landscape of green dotted with brilliant wildflowers. This is when this Wild West town really comes alive, with visitors enjoying fly fishing, inner tube rides and rafting trips on the Yampa River, endless scenic hiking and mountain biking trails, and natural hot springs that are ideal for soothing sore muscles afterward. If you can be here around late June/early July, you can attend the legendary annual Hot Air Balloon Rodeo and Art in the Park festival which boasts an extensive display of colorful hot air balloons along with some 50 artist vendors, live entertainment, food and drink vendors, and an interactive children’s art area.
From 9,000 ft (2,700 m) to 11,000 ft (3,400 m),[72] the montane forests give way to subalpine forests.[69] Forests of fir and Engelmann spruce cover the mountainsides in subalpine areas. Trees grow straight and tall in the lower subalpine forests, but become shorter and more deformed the nearer they are to the tree line.[72] At the tree line, seedlings may germinate on the lee side of rocks and grow only as high as the rock provides wind protection, with any further growth being more horizontal than vertical. The low growth of dense trees is called krummholz, which may become well-established and live for several hundred to a thousand years old.[72]
Central ColoradoFind yourself in Colorado Springs at Pikes Peak. We have five historic trains to transport you back to the days of cowboys and gold mining. Endless trails allow you to enjoy the abundant sunshine and spectacular scenery. A family vacation in Colorado Springs is the smart choice – great lodging values, a long list of low-cost or no-cost activities, and adventure around every corner. Order your free guide today.
With many peaks and granite rock formations, there are lots of rock climbing opportunities. Some favorite climbs include the aptly-named Lumpy Ridge and Longs Peak. Whether you prefer bouldering, mountaineering, rock climbing, or ice climbing, the park has something for climbers of all levels. In the winter, opportunities for snowshoeing, skiing, and sledding draw all levels of explorers. If you're in the western part of the park, visit Grand Lake. This breathtaking lake is the state's largest natural body of water, promising scenic views and plenty of outdoor fun. 
For ice cream and milkshakes, try Flavors of the Rockies, Hayley's or Laura's – all on Elkhorn Avenue and all recommended by recent travelers. To get your caffeine fix, check out Elkhorn Avenue's Kind Coffee and Inkwell & Brew, or Coffee on the Rocks on Moraine Avenue. And to sample a major Colorado food group, travelers can head to Lumpy Ridge Brewing Co. or Estes Park Brewery for a craft beer. 

During the winter most of Trail Ridge Road is closed due to heavy snow, limiting motorized access to the edges of the park.[68] Winter activities include snowshoeing and cross-country skiing which are possible from either the Estes Park or Grand Lake entrances. On the east side near Estes Park, skiing and snowshoeing trails are available off Bear Lake Road, such as the Bear Lake, Bierstadt Lake, and Sprague Lake trails and at Hidden Valley. Slopes for sledding are also available at Hidden Valley. The west side of the park near Grand Lake also has viable snowshoeing trails.[68][88] Backcountry skiing and snowboarding can be enjoyed after climbing up one of the higher slopes, especially late in the snow season after avalanche danger has subsided[89], and technical climbing remains also a possibility, although typically differing in style from the summer months[90].

A famous winter destination for travelers throughout the country, Aspen’s four impressive ski mountains make up its beautiful surroundings. Nestled in the heart of the White River National Forest, this area is a mecca for winter sports, popular for skiing and snowboarding. While hitting the slopes is the area’s most beloved attraction, visitors can also explore the wealth of high-end boutiques, interesting museums and wonderful hiking trails. Those who want to experience a different kind of outdoor adventure can also try cross-country skiing, snowshoeing and fly-fishing. Boasting even more activities in the summertime, visitors can go rafting, horseback riding and soar above the city in a hot-air balloon.
The winter view of Longs Peak from the Dream Lake Trail at Rocky Mountain National Park in Colorado is an epic sight. The wind kicks up a flurry of snow, sweeping the massive mountain and sending a chill we can feel through the screen. Does this make you want to put on your boots or slide under a blanket? Brandon Selinsky, www.sharetheexperience.org
This 5-bedroom residence features a stunning family room with a massive gas fireplace and a professional chef’s kitchen with dining area and breakfast nook. No expense was spared on the multi-zone sound system and other electronics throughout the home. Guests can settle into the cozy library/TV room or be blown away by the mineshaft themed cinema with a state-of-the-art digital projector and 11.1-point channel sound and hundreds of first-run movies and TV – all complimentary!
Rocky Mountain National Park is home to many species of animals, including nearly 70 mammals and almost 300 species of birds. This diversity is due to the park's varying topography, which creates a variety of habitats. However, some species have been extirpated from the park, including the gray wolf, the wolverine, the grizzly bear, and the American bison.
With many peaks and granite rock formations, there are lots of rock climbing opportunities. Some favorite climbs include the aptly-named Lumpy Ridge and Longs Peak. Whether you prefer bouldering, mountaineering, rock climbing, or ice climbing, the park has something for climbers of all levels. In the winter, opportunities for snowshoeing, skiing, and sledding draw all levels of explorers. If you're in the western part of the park, visit Grand Lake. This breathtaking lake is the state's largest natural body of water, promising scenic views and plenty of outdoor fun. 
In the shadow of Great Sand Dunes National Park and Pre­serve, the quirky town of Hooper sits atop a natural artesian hot spring, with water flowing year-round into the family-friendly Sand Dunes Pool. On the same property, The Greenhouse is an all-indoor, all-adult oasis with three small soaking tubs and a 10-by-75-foot zero-entry pool. The Greenhouse also has a 10-person sauna, indoor gardens and an onsite bar to help you stay even toastier. 

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.
The sun made us lazy, and after following Brian as he made his way upstream I found a wider expanse of sand and gravel, promptly plopping down on a pair of flip flops I had brought in my backpack as a make-shift seat. After identifying the northern harrier hawk over my head, and the savannas sparrows and red-winged blackbirds perched precariously on reeds across the water, I took out my knitting project. I didn’t have to worry about losing Brian; in the valley I could see for miles in both directions.
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