We stopped at Skull Cave before heading to the main cave complex. Skull Cave is a long lava tube that descends some distance below the surface. It is so cold at the bottom of the cave that it has a ice floor all year.
Entrance of Skull Cave.
A view of the cave from the entrance.
The sign board at the end of Skull Cave with a description of the Ice Floor.
As far as you can go in the cave.