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Mammoth Hot Springs

Mammoth Hot Springs are the main attraction of the Mammoth District. These features are quite different from thermal areas elsewhere in the park. Travertine formations grow much more rapidly than sinter formations due to the softer nature of limestone. As hot water rises through limestone, large quantities of rock are dissolved by the hot water, and a white chalky mineral is deposited on the surface.

Although visitors are sometimes confused by the rapidly shifting activity of the hot springs and disappointed when a favorite spring appears to have "died," it is important to realize that the location of springs and the rate of flow changes daily, that "on-again-off-again" is the rule, and that the overall volume of water discharged by all of the springs fluctuates little.

The Gardner River and Gardner River Canyon

The North Entrance Road from Gardiner, Montana, to Mammoth Hot Springs, Wyoming, runs along the Gardner River. The road winds into the park, up the canyon, past crumbling walls of sandstone and ancient mudflows. The vegetation is much thicker in the canyon than on the open prairie down below, the common trees being Rocky Mountain juniper, cottonwood, and Douglas-fir. Low-growing willows also crowd the river's edge in the flatter, flood-prone sections of the canyon.----Watch for wildlife in season: eagles, osprey, dippers, and kingfishers along the river and bighorn sheep in the steeper parts of the canyon.

Mt. Everts

Mt. Everts was named for explorer Truman Everts of the 1870 Washburn Expedition who became separated from his camping buddies, lost his glasses, lost his horse, and spent the next 37 days starving and freezing and hallucinating as he made his way through the untracked and inhospitable wilderness. Upon rescue, he was, according to his rescuers, within but a few hours of death. Everts never made it quite as far as Mt. Everts. He was found near the "Cut" on the Blacktail Plateau Drive and was mistaken for a black bear and nearly shot. His story, which he later published in Scribner's Monthly Magazine, remains one of Yellowstone's best known, lost-in-the-wilderness stories. It has also been published in book form, edited by Yellowstone's archivist Lee Whittlesey under the name Lost in the Yellowstone.---Mt. Everts is made up of distinctly layered sandstones and shales--sedimentary rocks deposited when this area was covered by a shallow inland sea, 70 to 140 million years ago.

Bunsen Peak

Bunsen Peak and the "Bunsen burner" were both named for the German physicist, Robert Wilhelm Bunsen. Although most people are familiar with the "Bunsen burner," few people know why his students gave the burner that name. He was involved in pioneering research about geysers, and a "Bunsen burner" has a resemblance to a geyser. His theory on geysers was published in the 1800s, and it is still believed to be accurate.---Bunsen Peak is 8,564 feet high (2,612 meters) and may be climbed via a trail that starts at the Golden Gate. Another trail, the old Bunsen Peak road, skirts around the flank of the peak from the YCC camp to the Golden Gate. This old road may be used by hikers, mountain-bikers, and skiers in winter.--The peak is also interesting because it burned in the 1880s and then again in 1988. A series of old photos show the creep of trees up Bunsen following the 1880 fires, and the new patterns of open space created by the fires of 1988.

Fort Yellowstone

We also have an online tour of Fort Yellowstone and a page that provides more detailed information concerning the Fort Yellowstone - Mammoth Hot Springs Historic District.

All of the red-roofed, many-chimneyed buildings in the Mammoth area are part of historic Fort Yellowstone. Beginning in 1886, after 14 years of poor civilian management of the park, the Cavalry was called upon to manage the park's resources and visitors. Because the Cavalry only expected to be here a short while, they built a temporary post near the base of the Terraces called Camp Sheridan. After five cold, harsh winters, they realized that their stay in the park was going to be longer than expected, so they built Fort Yellowstone, a permanent post.

In 1891, the first building to be constructed was the guard house because it directly coincided with the Cavalry's mission--protection and management. There were three stages of construction at Fort Yellowstone. The first set of clapboard buildings were built in 1891, the second set in 1897 as the Fort expanded to a two-troop fort, and, finally, the stone buildings were built in 1909 making the fort's capacity 400 men or four troops. By 1916, the National Park Service was established, and the Cavalry gave control of Yellowstone back to the civilians. After a short time away, the Cavalry returned in 1917 and finished their duty completely in 1918. Since that time, historic Fort Yellowstone has been Yellowstone's headquarters.

Other area features:

  • 45th Parallel Bridge and Boiling River
  • Albright Visitor Center & Museum
  • Mammoth Hot Springs Terraces

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