Related Clues:

• Grottoes
• Subterranean spot
• Underground chambers
• Site of some paintings
• Spelunking spot
• Large cave
• Craven in a cave
• A large cave
• Natural underground chamber
• Claim to be in a hole in the ground
• Claim to be hollow in down there
• The cleric comes back in the time so measureless to man, according to Coleridge
• Beware of the British Navy - it may be at the coast (6)
• Can one get around to get the priest to turn up for the underground?
• Beware of the British Navy as a whole, by the sound of it