“The island called St. Patrick's Purgatory is altogether rocky, and rather level : without the compass of the island, in the water towards the north east, about two yards from the shore stand certain rocks..."
“From Pettigo to Lough Dergh, the distance is about three miles, over bog and mountain. It is a scramble all the way, endeavouring to avoid the marsh and bog land, that cannot, however, be avoided..."