Expore Maui underground. Hike underground in one of Maui's most exciting eco-adventure activities. Explore Maui's largest lava tube system, located in Hana Maui, with our professional guides. Hip-packs with purified water and snacks are provided on our 2 hour tour. Click on your selection below Hike with experienced guides deep into the subterranean passages of one of the world's largest lava tubes.
Advanced reservations are highly recommended.
Our tours are non-touching events, so as to protect the precious features in the cavern system. Our cavern guides are educated in geology and the sciences, which offers an educational approach to our tours. We keep our tours small, to enhance the eco-experience.