Preview A cave explorer admires pretty cave formations in Mulu National Park. Image ID: 857-40604 Artist: Robbie Shone Purchase a commercial license Buy framed prints & more from our print store cave underground color image vertical one person mid adult male man cavern cold wet dangerous extreme exploration discover rock limestone water helmet light headlamp speleology passage tunnel tube descent abseil uncharted expedition borneo mulu national park sarawak stalactite straw crystal