Fish Lake-Mountain Ash Cutoff Trail
ElevationAscent: 56' 17 m
Descent: -62' -19 m
High: 6,490' 1,978 m
Low: 6,447' 1,965 m
GradeAvg Grade: 1% (1°)
Max Grade: 3% (2°)
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“A cutoff trail most often used in route to spectacular, 250-foot Union Falls.”— Tom Carter
From the parking area southwest of Fish Lake, follow the Fish Lake-Mountain Ash Spur Trail 1.2 miles north to a trail junction, just inside Yellowstone NP. A trail to campsite 9C6 lies to the right. Turn left and continue another .2 miles to the next junction where the Mountain Ash Cutoff Trail splits off to the right and begins its 1.9 mile course to join the Mountain Ash Creek Trail.
The Cutoff Trail immediately fords the Falls River. Its a tricky, knee-to-thigh-deep ford even after the spring runoff subsides, usually by mid-July. Once across the river, the trail travels over rolling terrain and crosses knee-to-thigh-deep Mountain Ash Creek before joining the Mountain Ash Creek Trail.
From here, to the right, Union Falls lies just 5 miles away.
Thanks to guidebook author, Tom Carter, for sharing this trail description. To learn more about visiting Yellowstone, check out his book, Day Hiking Yellowstone.
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Family Friendly, ADA Accessible, Need to Know, Flora & Fauna
Local Club: Yellowstone Forever
Nov 13, 2019: Half the park is after dark
Nov 7, 2019: Meet a Few of Yellowstone’s Lesser-Known Animals
Land Manager: National Park Service - Yellowstone National Park