Henrys Fork carves through the volcanic geology of the Targhee National Forest, revealing the dramatic edges of the Henrys Fork Caldera and the adjacent Island Park Caldera. This 2017 survey documents a landscape defined by deep drainages and ridges, including Big Bend Ridge and a series of rugged features such as Jump Off Canyon and Anderson Mill Canyon. The map illustrates the historic and continuing importance of the river for travel and access, marked by points like Sheep Falls and E Hatchery Ford.
45 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.
1955 · Ashton
USGS Topo · 1:250,000
1958 · Ashton
USGS Topo · 1:250,000
1960 · Ashton
USGS Topo · 1:250,000
1964 · Hatchery Butte
USGS Topo · 1:24,000
1964 · Last Chance
USGS Topo · 1:24,000
1965 · Lemon Lake
USGS Topo · 1:24,000
1965 · Ashton
USGS Topo · 1:24,000
1965 · Lookout Butte
USGS Topo · 1:24,000
1965 · Snake River Butte
USGS Topo · 1:24,000
1965 · Blue Creek Reservoir
USGS Topo · 1:24,000