A historic Snake River cataract with remote backcountry access and significant expeditionary heritage.
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Based on this listing's approximate location — see the note on coordinates below.
Caldron Linn, also known as Star Falls, is a historic Snake River cataract near Murtaugh that holds significant place in early American exploration. The falls was documented during the 1811 Astor Overland Expedition and earned its listing on the National Register of Historic Places in 1972.
This site sits on Bureau of Land Management land in Jerome County’s Twin Falls District. Access is via a rough, high-clearance road leading to a remote trailhead; standard backcountry hiking experience is expected. The official BLM pages do not provide itemized specifications for the waterfall’s height or the total hiking distance from the road, making advance planning important.
Because of its remote location and historical significance, visitors should come prepared for variable conditions and bring navigation skills. The difficulty rating reflects the moderate challenge of the terrain, though the waterfall itself is a rugged natural feature rather than a developed recreation area. This is best suited for those seeking off-the-beaten-path exploration rather than an easy day trip.
High-clearance vehicle and moderate hiking fitness required; spring through fall for accessible conditions.
Those without high-clearance vehicles or moderate backcountry experience.
No fee or permit requirement was published on the managing agency's site when we last checked — confirm current conditions before you go, since these change.
The managing agency's page (linked below) has the current trailhead and route details — round-trip distance wasn't published when we checked.
We track 8 waterfalls in Snake River Plain.
npgallery.nps.gov
National Park Service National Register of Historic Places database record (NRHP #72000442), checked 2026-09-04, confirms this Snake River cataract as a historic site in Jerome County, listed in 1972 for its role in the 1811 Astor Overland Expedition. Surrounding public land is BLM-managed per BLM Idaho recreation resources; no dedicated BLM.gov page with height/fee/access facts was located. Access is via a rough high-clearance road. No closure notice found.
Checked September 2026.