WYOMING: Devils Tower; Yellowstone & Grand Teton National Parks

View Tom Dempsey’s Wyoming images gathered from several trips. Yellowstone and Grand Teton National Parks are part of the Greater Yellowstone Ecosystem, which extends across corners of Wyoming, Montana, and Idaho. Also shown below are fall colors in Devils Tower National Monument.

Wyoming favorite photos

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Wyoming: Yellowstone National Park images

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  • Established in 1872, Yellowstone was the first national park in the world. UNESCO honored it as a World Heritage site in 1978.
  • The famous cone geyser of Old Faithful erupts up to 185 feet high, averaging 145 feet high, about every 90 minutes. Old Faithful is powered by boiling groundwater heated by a hotspot of light, hot, molten mantle rock near the surface. 640,000 years ago, a supereruption of the Yellowstone Supervolcano created the Yellowstone Caldera which measures 34 miles (55 km) by 45 miles (72 km). Any time in the next few hundred millennia, the active volcano of Yellowstone could cause vast destruction in North America and modify world climate.
  • Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green.
  • Morning Glory Pool is a colorful hot spring in Upper Geyser Basin. Microbial mats of cyano-bacteria and algae color the pool brown, yellow, and green. The pool’s center lacks the high temperature pure blue water seen in previous decades. Its glory has faded as objects tossed in by vandals have blocked hot water inlets.
  • Artists’ Paint Pots Trail is atmospheric early on a frosty morning.
  • Over thousands of years, Mammoth Hot Springs have built huge white travertine terraces including Terrace Mountain (and Minerva Terrace), the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the  old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera.
  • Commonly seen in the park, American bison (scientific name “Bison bison”) is also known as buffalo, despite being only distantly related to true buffalo. Members of the genus Bison are large, even-toed ungulates within the subfamily Bovinae.
  • The Yellowstone River (a major tributary of the Missouri River) flows through the Grand Canyon of the Yellowstone, located downstream from Yellowstone Falls.

Wyoming: Grand Teton National Park images

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Grand Teton National Park contains the major peaks of the 40-mile (64 km) Teton Range and part of the valley known as Jackson Hole, Wyoming. The Teton Range began their tectonic uplift 9 million years ago (during the Miocene Epoch), making them the youngest range in the Rocky Mountains. A parkway connects from Grand Teton National Park 10 miles north to Yellowstone National Park.

Seen best at sunrise, the Tetons reflect nicely in the Snake River at Schwabacher Landing (16 miles north of Jackson Hole on US26/89/191). Another good spot is where Mount Moran (12,605 feet) reflects in the Snake River at Oxbow Bend. The mountain is named for Thomas Moran, an American western frontier landscape artist. Mount Moran dominates the northern section of the Teton Range rising 6000 feet above Jackson Lake. 

Wyoming: Black Hills: Devils Tower National Monument

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Devils Tower (aka Bear Lodge Butte) rises dramatically 1267 feet above the Belle Fourche River, standing 867 feet from base to summit, at 5112 feet above sea level. Devils Tower was the first United States National Monument, established on September 24, 1906 by President Theodore Roosevelt. This charismatic butte is comprised of intrusive igneous rock exposed by erosion in the Bear Lodge Mountains, part of the Black Hills, near Hulett and Sundance in Crook County, Wyoming. The 1893 wood stake ladder for the first ascent of Devils Tower (by Willard Ripley) was restored 1972. The last known use of the ladder was in 1927 by daredevil Babe “The Fly” White. In 1972, the Park Service removed what was left of the bottom section, and restored the top 140 feet of the ladder (see photo). In mid October, bright yellow cottonwood tree leaves framed Devils Tower in quiet Belle Fourche River Campground.

Recommended guidebooks from Amazon.com:

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