Dan Yr Ogof - National Showcaves Wales
Dan Yr Ogof is a vast complex of 16 caves stretching 16 kilometres with just a small section open to the public.
It was first explored as recently as 1912 and most of the structure is only open to advanced cavers who come from all over the world to visit this wonder of Powys.
The National Showcaves Centre is a truly unique natural beauty and has even been used as a location for the filming of Doctor Who/
Tel: 01639 730 284