Gardner Cave
A Washington state park cave near Metaline Falls, about 2,072 feet long and 39–42°F, with free tours from mid-May that book up weeks ahead.
Metaline Falls, WA, 42°F inside
Caves in Washington
There is one show cave open to visitors in Washington: Gardner Cave.
Updated 2026-10-22. 1 of 1 checked in full against official sources.
Questions people ask
How many caves can you tour in Washington?
1 show cave runs public tours. We leave out wild caves that are closed, gated or need a permit.
What should you wear in a cave?
Closed shoes with grip, because paths are often wet. Most caves stay between the high 40s and low 70s °F all year, so a light layer is enough.
Caves in other states
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