One of Wales' premier tourist attractions was discovered on this day in 1912. Two local farmers ( Tommy and Jeff Morgan ) first explored the caves by candlelight. They armed themselves with a revolver as a precaution. The caves , which were voted "the greatest natural wonder in Britain" in a 2005 poll of Radio Times readers, are now open to the public.Dan Yr Ogof on Wikipedia
The Official Dan Yr Ogof Showcave Site
Caves Win 'natural wonder' Vote
