Kazumura Cave
19.4000°N, 155.0833°WOPEN YEAR-ROUND
The world's longest and deepest known lava tube, a 65km-long tunnel carved by flowing lava from Kīlauea on Hawaii's Big Island.
Nature & WildlifeNatural Wonders
The world's longest and deepest known lava tube, a 65km-long tunnel carved by flowing lava from Kīlauea on Hawaii's Big Island.