United States
Lava Beds
Seven hundred volcanic caves to explore alone with just a torch and your nerve.
You drop through a collapsed ceiling into darkness, headlamp catching the sheen of volcanic glass on walls that formed when molten basalt flowed underground and drained away. The cave goes deeper than your beam reaches. Above ground, Lava Beds National Monument in northern California is a treeless expanse of black volcanic rock under one of the darkest skies in the state. Below ground, it is a labyrinth.
Lava Beds contains over 700 lava tube caves — the densest concentration in North America — ranging from the paved, lit Mushpot Cave to undeveloped tubes requiring borrowed headlamps and a willingness to crawl. The tubes formed from eruptions of Medicine Lake Volcano over the past half-million years, and many remain exactly as the lava left them. Above ground, Captain Jack's Stronghold preserves the lava field fortification where 53 Modoc warriors held off 1,000 US Army troops for five months during the Modoc War of 1872-73. Petroglyph Section, a cliff face with over 5,000 carvings from multiple cultures, ranks among the densest rock art sites in the western United States. The monument's isolation — 40 miles from the nearest town — and treeless surface create some of the darkest skies in California.
Friends
Choosing a cave, borrowing headlamps from the visitor centre, and descending into an undeveloped lava tube with your group is the closest thing to genuine exploration left in the national park system. The range of difficulty means everyone finds their edge — some caves are walk-in corridors, others require belly-crawling through volcanic glass.
Solo
Entering an undeveloped lava tube alone with a single headlamp tests something primal. The monument encourages solo caving on many routes, and the combination of subterranean darkness below and Milky Way darkness above creates a solitude that operates on two planes.
Family
Cave exploration with torches — kids love it, visitor centre has loaner gear
- The 700 lava tubes range from the fully lit, paved Mushpot Cave to undeveloped tubes requiring hire headlamps and a willingness to navigate unmarked crawlways alone.
- Captain Jack's Stronghold, a lava field fortification, is where 53 Modoc warriors held off 1,000 US Army troops for five months in 1872-73 — the lava walls they fought from are still intact.
- Petroglyph Section, a cliff face with over 5,000 carvings from multiple cultures, is accessible via a 0.5-mile trail and is one of the densest pictograph sites in the western United States.
- The park's isolation — 40 miles from Tulelake — and treeless volcanic surface give it one of the darkest skies in California, with Jupiter casting faint shadows on fully clear nights.
Campfire meals beneath a sky so dark the Milky Way casts shadows.
Basque-influenced lamb from the ranches surrounding the lava flow.
Horseradish and beef jerky from a Tulelake general store, population 1,000.
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