The Cave Guide

Caves in California

9 caves in California run public tours. Here is what each one is like and how to visit.

Updated 2026-10-22. 9 of 9 checked in full against official sources.

Crystal Cave1Lake Shasta Caverns2Mitchell Caverns3Boyden Cavern4California Caverns5Moaning Cavern6Sunny Jim Cave7Black Chasm8Mercer Caves9

Mitchell Caverns

Caves in California's Providence Mountains State Recreation Area, seen on a 2-hour guided tour that includes a vigorous 1.5-mile round-trip hike; closed in July and August.

Providence Mountains State Recreation Area, CA, from $20

Sunny Jim Cave

A sea cave on La Jolla Cove reached by a century-old tunnel from inside the Cave Store — about 145 steps down, self-guided.

La Jolla, CA, from $13

Black Chasm

A cavern in Volcano, California, off Highway 88 near Pine Grove, viewed from three platforms linked by five flights of stairs.

Volcano, CA, 58°F inside, from $24

Mercer Caves

A California cave with 45-minute guided tours, open daily in summer and Thursday to Monday the rest of the year.

California, from $24

California caves side by side

CaveInsideAdult ticketRun by
Crystal Cave50°Fnot yet checkedNational park / federal
Lake Shasta Caverns58°F$46Privately operated
Mitchell Cavernsnot yet checked$20State park
Boyden Cavern55°Fnot yet checkedPrivately operated
California Caverns54°F$24Privately operated
Moaning Cavern61°F$27.56Privately operated
Sunny Jim Cavenot yet checked$13Privately operated
Black Chasm58°F$24Privately operated
Mercer Cavesnot yet checked$24Privately operated

Questions people ask

How many caves can you tour in California?

9 show caves run 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