Another version:
Some eighteen years ago, while exploring the limestone caves at Llanamynech, on the English border of Montgomeryshire, I met with [this] story. A man playing the bagpipes is said to have entered one of the caves, well provisioned with Welsh mutton, and after he had been in for some time his bagpipes were heard two miles from the entrance, underneath the small town of Llanamynech. He never returned to tell his tale. The few bones found in the cave are supposed to be those which he had picked on the way.
From p34 of ‘Cave Hunting’ by W. Boyd Dawkins (1874).