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]
There are four ecosystems, or zones, in Rocky Mountain National Park: montane, subalpine, alpine tundra, and riparian. The riparian zone occurs throughout all of the three other zones. Each individual ecosystem is composed of organisms interacting with one other and with their surrounding environment. Living organisms (biotic), along with the dead organic matter they produce, and the abiotic (non-living) environment that impacts those living organisms (water, weather, rocks, and landscape) are all members of an ecosystem.[66]
Glacial Basin was the site of a resort run by Abner and Alberta Sprague, after whom Sprague Lake is named. The lake is a shallow body of water that was created when the Spragues dammed Boulder Brook to create a fish pond. Sprague Lake is a popular place for birdwatching, hiking and viewing the mountain peaks, along with camping at the Glacier Basin campground.[46]

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.


Enos Mills, the main figure behind the creation of Rocky Mountain National Park, enjoyed walking to Lily Lake from his nearby cabin. Wildflowers are common in the spring and early summer. In the winter, the trail around the lake is often suitable for walking in boots, or as a short snowshoe or ski. Other lakes in the Wild Basin include Chasm Lake, Snowbank Lake, Lion Lakes 1 and 2, Thunder Lake, Ouzel Lake, Finch Lake, Bluebird Lake, Pear Lake, and Sandbeach Lake. Many of the lakes have backcountry campsites. Waterfalls include Ouzel Falls, Trio Falls, Copeland Falls, and Calypso Cascades.[47]
The Springs Resort - overlooks the San Juan river and is an oasis of relaxation and romance. The resort features 18 different therapeutic mineral soaking pools, full spa services and deluxe accommodations. They've got romance packages perfect for weddings, honeymoons and anniversaries too. And with Wolf Creek Ski Area just a short distance away, this could be a very romantic Colorado winter vacation.
Tucked deep in the San Juan Mountains in southwestern Colorado, this carefully restored 19th-century ghost town and natural spa is surprisingly well appointed. The rugged, old-timey building exteriors hide high-end features such as cathedral ceilings, air conditioning, and gas fireplaces. Dolores has four parks and a peaceful bike trail that takes peddlers along the tumultuous Dolores River. You can enjoy hands-on exhibits and a nature hike at the Anasazi Heritage Center, or explore an exact replica of the original narrow-gauge rail car, the Galloping Goose. Share a romantic meal with tasty cocktails at Sophia’s Bistro.
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.”
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The recreational activities are what draw most people to Maroon Bells. The hiking here is incredible, with all kinds of day hikes and backpacking areas. Mountain biking trails cover hundreds of miles. Fishing in lakes, ponds, rivers, and streams is popular in summer. In winter, people come here to ski, snowshoe, and snowmobile, making it a year-round outdoor playground.


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 .
About 300 million years ago, the land was uplifted creating the ancestral Rocky Mountains.[55] Fountain Formation was deposited during the Pennsylvanian period of the Paleozoic era, 290–296 million years ago. Over the next 150 million years, the mountains uplifted, continued to erode, and covered themselves in their own sediment. Wind, gravity, rainwater, snow, and glacial ice eroded the granite mountains over geologic time scales.[56] The Ancestral Rockies were eventually buried under subsequent strata.[57]
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.
A spectacular scenic drive stretches from the old mining town of Silverton, to the town of Ouray, along what is called the Million Dollar Highway. This is a 46-kilometer two-lane highway that hugs the mountainside in places and looks out over jaw-dropping cliffs and across valleys to inspiring mountain peaks. It is one of the most spectacular mountain drives in Colorado. If you have time, you can extend this into a longer route and drive the San Juan Skyway Scenic Byway. The Skyway is a full-day trip that you will want to do in good weather, but can be done in winter or summer.
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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