Big Painted Cave and Symbol Bridge

(580 ft/177 m). Named for the bones of antelope and mountain goats, bighorn sheep skulls, and two human skeletons discovered inside. It is a remnant of two very large lava tubes, one on top of the other. This allows cold winter air to be trapped inside and create a year-round ice floor on the lower level, accessible via a smooth trail and down a metal stairway to a platform.

(650 ft/198 m). Visitors once ice skated by the lantern light on an enormous ice floor at the bottom of this cave. Changing air flow patterns are the suspected cause of melting, and today you can see small ice remnants from a viewing platform at the bottom of a stairway.

Labyrinth Cave (1,239 ft/378 m) and Lava Brook Cave (859 ft/262 m). These caves near the Visitor Center are connected by way of a segment requiring crawling and twisting. Ceiling heights vary but tend to be low throughout. Pay attention to your route, as the name Labyrinth suggests! The "Lava Brook" is an interesting pattern left on the floor of one passage by the last lava flow.

(2,561 ft/781 m). Crawling is required in the downstream portions of this cave where it connects to Labyrinth and Lava Brook Caves. Upstream (right) from the entrance are a few tight areas, one of which is 6 in (15 cm) wide at knee level. There is some stooping before the ceiling height allows walking upright.

(770 ft/235 m). Recommended as an introductory cave. This cave has lights and interpretive signs explaining the formations.

Balcony Cave (2,903 ft/885 m) and Boulevard Cave (759 ft/231 m). Short trails lead to these caves from the parking lot. They have sections of low ceilings, and an optional crawl up onto a balcony created by changing lava flow levels. The "boulevard" was named for the smooth floor created by a lava cascade.