Subway Cave Trail

Descend into the Subway Cave lava tube for a short hike. The Hat Creek Lava Flow was created by the ground breaking north of Lassen Volcanic National Park. The top of the lava flow began to cool and solidify while molten rock below continued to flow, creating lava tubes which carried the red-hot rock miles from its source. The Subway Cave is a section of lava tube less than a third of a mile long. The cave has concrete steps at both ends that make it easy to get to the spelunkers.