Descend into a kilometer-long lava tube formed by ancient volcanic flow, an eerie subterranean walk unlike anything on the coast.
What to expect
You'll climb down into a cool, dark tunnel where tree roots hang through cracks in the rock ceiling and your voice echoes strangely. Some sections require ducking and scrambling, adding a mild sense of adventure without technical difficulty. Above ground, you'll likely also pass through Scalesia forest and see the twin sinkholes of Los Gemelos.
Good to know
Bring sturdy shoes and a flashlight or headlamp; combine with the tortoise ranch visit since both are in the highlands, saving on transport time.
Sail there
Luxury cruises that call at Santa Cruz Island — book through us, the fare is identical and your concierge stays on your side.
More to do in Santa Cruz Island
- Giant Tortoises in the Wild at a Private Highlands Ranch
- Snorkel Las Grietas' Volcanic Fissure at First Light
- Charles Darwin Research Station: Private Conservation Briefing
- Kayak the Mangroves and Sea Lion Coves of Puerto Ayora's Coastline
- Twilight Fish Market Stroll and Sea Lion Watch, Puerto Ayora