Cave

Ballymaglancy Cave is a 726-metre underground river cutting through Carboniferous limestone west of Cong, where lesser horseshoe bats still hang in the dark. The townland name points to a human family, perhaps the Clancy or Glancy line, giving its identity to water that has been digging since before written memory. Pollwalter, the mill-pond name saved alongside the cave, suggests people once lived close enough to hear or use what the ground was doing. The cave remains closed to most visitors because the bats need that continuity of shadow.