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]
To reach Rocky Mountain National Park, many travelers fly into Denver International Airport (DEN) and either rent a car and drive the 80-some miles northwest to Estes Park or take the Estes Park Shuttle, which runs frequent routes from the airport to Estes Park for $45 one-way and $85 round-trip. There is no public transportation available between the airport and the park.
Located in a quiet, residential alpine setting, guests can spread out and explore the surroundings. Numerous balconies and decks have unobstructed views of the Gore Mountain Range, and the large private back yard with charming stone patio and massive outdoor gas fire pit is perfect for Après-ski gatherings. During warmer months, revel in the beauty and tranquility of the fanciful waterfall feature and perennial gardens, and walk up the mountainside on the fantastic stone switchback trail leading to several stone belvederes, each with increasingly magnificent and unobstructed views of the Vail Valley.
Pikes Peak – “America’s Mountain” is one of the most iconic and beautiful vacation destinations in the West. Rising over 14,000 (making it one of Colorado’s many 14-er’s) feet, Pikes Peak has inspired Americans, including Katharine Lee Bates – who wrote “America the Beautiful” after summiting, for generations. There are a number of ways to enjoy it on your Colorado vacation, including by bicycle (ask us about our exciting mountain biking / rafting packages!) Or ride the historic Cog Railway to the top, where a new visitor’s center is being planned. Our tip: try the donuts – they’re amazing! 
No trip to Estes Park would be complete without a leisurely drive along the Trail Ridge Road at Rocky Mountain National Park, with its winding scenic views of craggy peaks. Park your vehicle and take a hike through one of the many pine-scented trails bordered by forests and tundra. Keep an eye out for elk and other wildlife as you go! Roosevelt National Forest is another wilderness area worth exploring, Meanwhile, you can enjoy the breathtaking views over the valley on the Estes Park Aerial Tramway, which connects the town to the summit of Prospect Mountain. Down Estes Park has lots of options for one-off shopping and dining, whether you feel like chowing down on a handmade pizza or a juicy elk burger. Afterward, quench your thirst with a pint of Colorado craft beer at one of Estes' local breweries.
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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