The Rock of Gibraltar, taking into consideration its limited extent, has more than its fair share of localities bearing diabolic appellations, and the following list may prove interesting to your correspondents and readers.
The Devil's Bellows, a small valley enclosed amongst the fortifications at the entrance to Windmill Hill barracks and the military prison. On a stormy day the wind rushes with great violence through a tunnel here and sweeps down the defile.
The Devil's Bowling Alley or Green, a rock strewn and rough piece of ground between Europa Pass and the cliffs overlooking Quarry Bay and to the south of Buena Vista barracks.
The Devil's Frying Pan. The New Mole Parade is so called on account of the intense heat felt there in summer. The New Mole represents the handle of this Satanic cooking utensil.
The Devil's Gap, a ravine which runs down from the heights above the city, not far from Porral's farm.
The Devil's Mouth. The term Boca del Diabolo (sic) was applied by the Spaniards to the Old Mole Battery, whose fire caused them much annoyance when they were besieging the fortress.
The Devil's Telescope is a narrow passage or tunnel piercing the crest of the rock, by which access is obtained to the Monkeys' Alameda, which is a kind of terrace on the eastern side of the rock and situated on O'Hara's Hill.
The Devil's Tongue “La Lengua del Diabolo (sic) the point or spit of ground on which the Old Mole Battery is built.
The Devil's Tower is called by the Spaniards of to-day "La Torre del Diabolo," though formerly it was known to them as “La Torre de San Piedro." (Pedro) It is a small martello, standing on the north front, near the eastern beach, at a distance of one hundred and thirty yards from the base of the rock. There is no door, but entrance appears to have been effected by means of a ladder through an opening in its wall at a height of twelve or fifteen feet. There are some who assert that it is of Phoenician origin, but this is improbable.
It is stated that the isolated rock on which it is built, and which is now almost covered with sand, was formerly surrounded by water, though the Mediterranean is now at a considerable distance from it.
The Devil's Tusk is a pinnacle of limestone in the shape of a tooth, and about thirty feet in height, at the rear of the Royal Naval Hospital.
For more details and a more complete list (see LINK)