Sacajawea Mtn stands as a prominent landmark overlooking a dramatic stretch of the Missouri River as it carves through the Missouri River Canyon. This 2020 survey documents the complex topography of the Gates of the Mountains area, where the river widens into Upper Holter Lake and reaches southward toward Hauser Lake. The map details a landscape of deep canyons and gulches, including the historically significant Mann Gulch and Meriwether Canyon, reflecting the intricate geological formations of the Helena National Forest.
35 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Fort Logan
USGS Topo · 1:250,000
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Helena
USGS Topo · 1:62,500
1899 · Helena
USGS Topo · 1:250,000
1903 · Helena
USGS Topo · 1:250,000
1947 · Butte
USGS Topo · 1:250,000
1948 · White Sulphur Springs
USGS Topo · 1:250,000
1950 · East Helena
USGS Topo · 1:62,500
1950 · Helena
USGS Topo · 1:62,500