You are hereEldon Hole
Known as one of the wonders of the Peak, Eldon Hole was once thought to be a bottomless refuge for the Devil. Folklore suggests that a man called Charles Cotton was lowered down the hole in the past on a rope a mile long and still didn't reach the bottom.
Another man was lowered down and found to be unconscious when he was raised, he died soon afterwards. Investigation in the 18th Century proved the Hole to be around 60 yards deep.
Pot holes were often seen as the abode of fairies and supernatural beings in the past. These beings were later identified with the Devil.