West Cave is a typical waterfall cave, formed by the erosion of the falling water at the foot of the waterfall. It is part of a nature trail in the lush, green canyon of the West Cave Preserve, which is owned by the Lower Colorado River Authority and operated by a nonprofit conservation organization. The trail leads from the plateau into a small canyon formed by a creek. A 12m high waterfall drops into a deep, green pool. The geology there is very interesting.

The cave itself is a small through cave with a single passage, 46m long and 2.5m high. West Cave is shaped like a crescent, clinging to the huge bowl around the waterfall. This Texas cave is closed towards the pool at the center of the bowl by a wall of massive calcite deposits.