• Ruby LakeSierra Nevada, CA.
  • Gannett PeakWind Rivers Range, Wy.
  • Darren MountainsMt. Aspiring National Park, NZ.
  • Kings PeakUnita Mountains, UT.
  • Pioneer BasinSierra Nevada, CA.
  • Lake WakatipuSouth Island, NZ.
  • Zig Zag TrailPairie Creek Redwoods State Park, CA.
  • Mono PassSierra Nevada, CA.
  • Ruby Crest TrailRuby Mountains, NV.
Ruby Lake1 Gannett Peak2 Darren Mountains3 Kings Peak4 Pioneer Basin5 Lake Wakatipu6 Zig Zag Trail7 Mono Pass8 Ruby Crest Trail9

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A mountain is a large landform that stretches above the surrounding land in a limited area usually in the form of a peak. A mountain is generally steeper than a hill. Mountains are formed through tectonic forces or volcanism. These forces can locally raise the surface of the earth by over 10,000 feet (3,000 m). Mountains erode slowly through the action of rivers, weather conditions, and glaciers. A few mountains are isolated summits, but most occur in huge mountain ranges. High elevations on mountains produce colder climates than at sea level. These colder climates strongly affect the ecosystem of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and climate, mountains tend to be used less for agriculture and more for resource extraction and recreation, such as mountain climbing. The highest mountain on Earth is Mount Everest in the Himalayas of Asia, whose summit is 8,848 m (29,029 ft) above mean sea level. The highest known mountain on any planet in the Solar System is Olympus Mons on Mars at 21,171 m (69,459 ft).

"God has cared for these trees, saved them from drought, disease, avalanches, and a thousand tempests and floods. But he cannot save them from fools." John Muir