Hidden Cave
Nevada, temporarily closed
The cave in Great Basin National Park, seen only on ranger-led tours that run daily year-round and regularly sell out.
Lehman Caves were discovered in the late 1880s and were protected for more than 60 years as Lehman Caves National Monument before becoming part of Great Basin National Park.
History source: nps.gov/grba.
Lehman Caves is in or near Great Basin National Park, NV.
Distances are straight-line from each city center.
Tours must be booked ahead; Recreation.gov strongly recommended.
Late 1880s, according to the cave's own history.
Checked on 2026-10-22 against nps.gov (Lehman Caves page). Prices and hours change, so confirm on the official site before you drive out.