Helena-Lewis and Clark OSVUM

Over-Snow Vehicle Use Map (OSVUM) of South Big Belt Mountains in Helena-Lewis and Clark National Forest (NF) in Montana. Published by the U.S. Forest Service (USFS).

featured in

	Montana Pocket Map
	National Forests Northwest

covered parks

Helena National Forest

Lewis and Clark National Forest

source

U.S. Forest Service (USFS), November 2018