"Through the heart of the canyon" by U.S. National Park Service , public domain

Custer Gallatin MVUM

Pryor Mountains 2020

Motor Vehicle Use Map (MVUM) of Pryor Mountains in Custer Gallatin National Forest (NF). Published by the U.S. Forest Service (USFS).

Motor Vehicle Use Map (MVUM) of Pryor Mountains in Custer Gallatin National Forest (NF). Published by the U.S. Forest Service (USFS).

source

U.S. Forest Service (USFS), December 2019

also available

National Parks
USFS NW