Glacial geology in Rocky Mountain National Park can be seen from the mountain peaks to the valley floors. Ice is a powerful sculptor of this natural environment and large masses of moving ice are the most powerful tools. Telltale marks of giant glaciers can be seen all throughout the park. Streams and glaciations during the Quaternary period cut through the older sediment, creating mesa tops and alluvial plains, and revealing the present Rocky Mountains.[61] The glaciation removed as much as 5,000 feet (1,500 m) of sedimentary rocks from earlier inland sea deposits. This erosion exposed the basement rock of the Ancestral Rockies. Evidence of the uplifting and erosion can be found on the way to Rocky Mountain National Park in the hogbacks of the Front Range foothills.[60] Many sedimentary rocks from the Paleozoic and Mesozoic eras exist in the basins surrounding the park.[62] 

Relax to the sounds & beauty of Fall River.  Our resort is perfectly located halfway between the Village of Estes Park & Rocky Mtn National Park (2.5 mi each way).  Enjoy a furnished 1,2, or 3 bedroom mountain cabin/condo with a full kitchen, jacuzzi spa tub or hot tub, fireplace, & gas grill.  Each bedroom has it's own bath!  Save $'s - cook breakfast in, then grill dinner.  Winter deals & packages available.  River Stone Resorts & Bear Paw Suites Details
Wildflower-lovers are never disappointed in June and July when the meadows and hillsides are splashed with botanical color. Autumn visitors can relax among the golden aspens or enjoy the rowdier antics of the elk rut during mating season. And those brave enough to venture into the cold during the winter are treated to snowscapes unlike any other, as the park is open year-round.
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.
The Trail Ridge Road, which itself reaches an altitude of more than 12,000 feet, is the main driving route through the park and offers easy access to this incredible terrain. You can sightsee from the comfort of your car or stop off along the way for a hike or easy walk. The park has an extensive system of hiking trails that range from paths of less than a half-mile to full-day and multi-day hikes. If you're lucky, you may see elk, bighorn sheep, deer, and other critters.
And when it’s time to book your weekend trip to Colorado, consider a vacation rental as your accommodation. Whether you prefer an urban loft, slopeside home, or mountain chalet, TripAdvisor offers a wide variety of different rentals across the state. You’ll be treated to homey amenities such as a full kitchen, laundry, and even perhaps a fireplace and Jacuzzi for those chilly Colorado nights! 

Brian and I descended back to ~7,000 feet for dinner in a small-town Indian restaurant in Nederland, Colorado, west of Boulder. By then, both our heads ached like a bad hangover, and my lungs literally burned when I tried to inhale anything but shallow breaths. Add generalized joint pain, and I had a full-blown case of altitude sickness. Given that I am a noted hypochondriac, I expected the worst.
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