Laurel Caverns is a large natural calcareous sandstone cave located 50 miles south of Pittsburgh. Most of the passage ceilings in its four-mile labyrinth are between ten and twenty feet high (many as high as 50 feet) with an average width of over twelve feet. This makes it the largest cave in Pennsylvania. If classified as a sandstone cave, it is the largest sandstone cave in the world.

Because of its size, Laurel Caverns is also the largest natural bat hibernaculum in the northeastern United States. In commitment to its preservation mission, the cave is closed during winter months for the bat’s winter hibernation season. Therefore, visitors will not likely see bats since the cave is open during the spring, summer, and fall months when bats have left the cave.