Pridhamsleigh Cavern, Limestone cave system near Ashburton, England.

Pridhamsleigh Cavern is a limestone cave system near Ashburton with interconnected passages and chambers reaching deep below the surface. The network includes various underground rooms formed through natural geological processes over an extended period.

The cave was explored through diving expeditions in the early 1970s and proved significant for understanding Devon's geological formations. These explorations helped expand knowledge of the region's underground cave systems.

The Plymouth Library maintains detailed hand-drawn plans of the cave system, documenting its complex network of passages for future generations.

Visiting requires appropriate equipment such as helmets and sturdy clothing, as conditions underground can be wet and tight. It helps to clarify requirements beforehand and arrange access with a local guide or organized tour.

The cave hosts a specialized population of tiny white shrimp found only in a few cave systems in southwest England. These rare crustaceans have adapted to the dark environment and hold particular interest for scientific research.