Kaumana Caves is a massive cave that is part of a 25-mile long network of lava tubes created by the Mauna Loa lava flow of 1880. The public part of the cave stretches about 2 miles and quickly goes pitch black as soon as you enter. Be sure to bring a flashlight if you plan to do some exploring. Shoes are recommended as the cave floor is slippery.
Sadly, some visitors have vandalized the cave by carving their initials into the walls or breaking off pieces of lava rock. We ask that you please travel pono--or with care--and leave no trace as you visit one of Hawai'i natural wonders.
Pro Tip! If you didn't bring a headlamp or flashlight with you, Costco sometimes carries an inexpensive three-pack of headlamps that you can pick up before heading to the caves.
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