Majlis al Jinn - the "Meeting Place of the Spirits" is the largest cave in the Arabian Peninsula. Formed by water this cave drops almost 400 feet into a cathedral like chamber. It is the second largest cave chamber in the world(floor surface area).
Stefan Glowacz and Chris Sharma climb Majlis al Jinn, staring down into a 160 meter deep hole in the ground.
Base jumpers from Skydive Dubai showcase their skills as they skydive into the cave.
Steve Backshall explains how the cave was created in a PBS presentation.