The Henrys Fork Caldera and Island Park Caldera dominate this high-plateau landscape of Targhee National Forest, revealing the dramatic geological history of eastern Idaho. Central to the map is the descent of Henrys Fork through a deep canyon, featuring the significant cascades at Upper Mesa Falls and Lower Mesa Falls. These landmarks are accessible via the Mesa Falls Scenic Byway, which follows the river's edge through the timbered terrain.
60 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1955 · Ashton
USGS Topo · 1:250,000
1957 · Warm River Butte
USGS Topo · 1:62,500
1957 · Buffalo Lake
USGS Topo · 1:62,500
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 · Ashton
USGS Topo · 1:24,000
1965 · Lookout Butte
USGS Topo · 1:24,000
1965 · Snake River Butte
USGS Topo · 1:24,000