Observation Pass
Gap in Lewis and Clark County, Montana · on the USGS Benchmark quadrangle
47.38883, -112.92616
Maps that show Observation Pass
Get them in the map app
Benchmark, MT
Detailed map of terrain, trails and roads
USGS topo, 2024
Benchmark
Forest Service topo with road numbers
Forest Service FSTopo 7.5-minute quad
Benchmark/Beaver/Willow Areas Over-Snow Vehicle Use Map (sheet)
Where snowmobiles are allowed
Helena-Lewis and Clark National Forest (2019)
Rocky Mountain Ranger District Over-Snow Vehicle Use Map
Where snowmobiles are allowed
Helena-Lewis and Clark National Forest (2019)
Dearborn River 30x60 Land Ownership (BLM Surface Management)
Land Ownership Maps from BLM Data · Montana
Seeley Lake RD Motor Vehicle Use Map (MVUM)
Forest roads and trails open to vehicles
Lolo National Forest
Seeley Lake Ranger District OSVUM
Where snowmobiles are allowed
Lolo National Forest
Helena-Lewis and Clark National Forest
West — Forest Service forest map
Flathead National Forest
Forest Service forest map
Lolo National Forest
Forest Service forest map
IFR Enroute Low Altitude Chart L-13 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-01 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-01 (Alaska)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).