A small junction room within the seldom visited Wayne Cave, a lava tube in the Medicine Lake Volcano area of Northern California.  The cave is roughly 700' in length & is all breakdown w/ two squeeze-through sections towards the end that open into a large room.  The entranceway drops down a bit to where some seasonal ice is visible.  Here the side passage that heads about 50 feet to the right before a lava seal is really the only natural part of the cave that hasn't collapsed.