The curiously named "Peter's Paps" is a cave situated near Port Logan.
According to Coxe, it is difficult to reach due to the erosion of the coastline.
The cave was once used by those suffering from whooping cough for a curious custom. They would catch drops of water that fell from the cave roof in their open mouths hoping that this would cure their ailment.
Lat/Long: 54.738,-4.9896754 (approx)
For further information, please read Haunted Britain by Antony D. Hippisley Coxe.