Hopkins Chocolate Cave is one of the most challenging caves in the park. There is one passage that is less than 3 feet high, and deeper areas of the cave require crawling. Explorer E.L. Hopkins named the cave for its rich brown lava formations that look like melted chocolate.
Check in with rangers at the Visitor Center for a free permit before entering any of the caves in the park, and always follow their rules for caving safely and softly.