Tooth Cave, Underground Gower 

Tooth Cave is the longest system in the Gower Peninsula, South Wales.
It is a strenuous and occasionally hazardous expedition, not possible during bat hibernation and any unsettled rainy weather. As a result it is rarely visited and the video of the first film of the whole cave, including a section beyond a seasonal sump that is normally inaccessible. The cave forms part of the Green Cwm underground drainage system that will be presented in 2 more videos