The Henrys Fork Caldera and Island Park Caldera define the geological character of this section of the Targhee National Forest. The landscape is a network of volcanic landforms and drainage patterns, where Warm River and Worm River flow through a terrain marked by distinctive rises like Hatchery Butte, Ripley Butte, and Eccles Butte. Human presence is concentrated along a historic Railroad Right-Of-Way that passes through the small settlements of Eccles and Pineview. The local geography is further detailed by numerous named forest access points, including N Hatchery Butte and several numbered spurs. This map captures a unique intersection of geothermal history and early 21st-century forest management, showing how transport corridors like Eccles Rd and S Hatchery Butte Rd navigate the complex caldera floor.
40 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 · Island Park
USGS Topo · 1:24,000
1964 · Island Park Dam
USGS Topo · 1:24,000
1964 · Last Chance
USGS Topo · 1:24,000
1965 · Lookout Butte
USGS Topo · 1:24,000