"Snowmobiles waiting to enter park" by Yellowstone National Park , public domain

West Yellowstone

Snowmobile North

Map of Snowmobile Trails (North) of West Yellowstone in Idaho, Montana and Wyoming. Published by the U.S. Forest Service (USFS).

Map of Snowmobile Trails (North) of West Yellowstone in Idaho, Montana and Wyoming. Published by the U.S. Forest Service (USFS).

covered parks

source

U.S. Forest Service (USFS), February 2017

also available

National Parks
USFS NW