Lava Beds National Monument

This California Monument Has the Highest Concentration of Lava Tubes in North America — With More Than 800 Caves

"Set on the flank of the Medicine Lake Volcano near the town of Tulelake, I found Lava Beds National Monument shaped by half‑million years of eruptions that created more than 800 lava tubes — 24 of which are open to visitors — the highest concentration of lava tubes in North America. The accessible caves tend to be beginner‑friendly with higher ceilings, established trails, and smooth floors, while more advanced caves like the Labyrinth require crawling through small spaces and multiple, disorienting passageways. I appreciated the relative freedom to explore on my own but noted the safety cautions: it’s easy to get lost, so tell someone your plan, travel with a group, follow cave maps where available, and respect restrictions (no pets, fires, smoking, or food in the caves; leave the bats alone). Aboveground attractions include 13 hiking trails, a campground, Native American rock art, abundant fauna (rattlesnakes, kangaroo rats, mountain lions) and excellent birdwatching; wildflowers bloom from early spring to late fall and ferns often mark cave entrances. Permits to enter caves are free at the visitor center (open daily 9:30 a.m.–4:30 p.m.), and cavers need a helmet and two light sources per person (helmets can be purchased and flashlights borrowed at the visitor center; headlamps or flashlights are preferred over phone lights). Long pants, sturdy shoes, and an extra layer are recommended; the site is open year‑round, with an entrance fee of $25 per vehicle (one to seven days) and campsites at $10 per night." - Evie Carrick Evie Carrick Evie Carrick is a writer and editor who’s lived in five countries and visited well over 50. She now splits her time between Colorado and Paris, ensuring she doesn't have to live without skiing or L'As du Fallafel. Travel + Leisure Editorial Guidelines