SPELEOGENESISFor a million years rainwater has eroded the limestone of the Yorkshire Dales. Ever penetrating crevices in the rock it has created an underground world....a realm of darkness. You may be surprised by this multi-award winning film. Its specially composed soundtrack enhances the microscopic beauty and contrasting violence of the forces which have created a world beneath us. In the words of Sir David Attenborough "It's really remarkably good"