Upper Geyser Basin-Biscuit Basin Trail
ElevationAscent: 116' 35 m
Descent: -107' -33 m
High: 7,349' 2,240 m
Low: 7,272' 2,217 m
GradeAvg Grade: 2% (1°)
Max Grade: 5% (3°)
Popular runs nearby
31.6 mi 50.9 km • Point to Point • 1,408 ft Ascent 429.16 m Ascent
Shoshone Lake & Geyser Basin
21.2 mi 34.1 km • Point to Point • 1,204 ft Ascent 367.11 m Ascent
6.8 mi 11.0 km • Out and Back • 1,570 ft Ascent 478.47 m Ascent
Monument Geyser Basin
2.7 mi 4.4 km • Out and Back • 676 ft Ascent 206.17 m Ascent
Mary Mountain-Nez Perce
20.9 mi 33.7 km • Point to Point • 834 ft Ascent 254.26 m Ascent
Seven Mile Hole-Washburn Hot Springs
13.3 mi 21.4 km • Loop • 2,016 ft Ascent 614.54 m Ascent
“This loop trail from Biscuit Basin takes you past Artemisia Geyser and Morning Glory Pool.”— Tom Carter
The first 0.9 miles of this trail is infrequently used. It first passes Cauliflower Geyser on the right, then quickly makes a right turn. The Powerline Trail, used mostly by skiers in the winter, is to the left. From the junction, our trail follows an old roadbed that once was part of the main Grand Loop Road leading from Old Faithful. In 1972, to reduce stress on the geyser basin and better direct traffic the NPS constructed the Old Faithful interchange and moved the highway out of the basin.
The trail passes Gem Pool and a number of other thermal features before reaching Artemisia Geyser at the 0.5-mile mark. Here you get a commanding view of the geyser from above. Artemisia is the genus that sagebrush falls under. From this angle, it is possible to understand how the maze of silicon dioxide deposits, which emanate from the pool, cause the spring to resemble that plant. Artemisia erupts impressively to a height of 30 feet about once every 24 hours. Just beyond Artemisia lie two geyserite cones which are collectively known as Atomizer Geyser.
The trail continues another 0.4 miles over rolling terrain to Morning Glory Pool. Long a favored destination, Morning Glory was named in the 1880s for its remarkable likeness to its namesake flower. This beautiful pool has fallen victim to vandalism. People have thrown literally tons of coins and rocks into the pool. The debris subsequently became embedded in the spring's vent, affecting water circulation and accelerating thermal energy loss. Morning Glory's appearance has changed as its temperature has dropped. Orange and yellow bacteria that formerly colored the periphery of the spring now spread toward its center.
Thanks to guidebook author, Tom Carter, for sharing this trail description. To learn more about visiting Yellowstone, check out his book, Day Hiking Yellowstone.
Land Manager: National Park Service - Yellowstone National Park