The reservoir may be on the northern limb of the Cowbridge anticline.

Petermann is a lunar crater that is located near the northern limb of the Moon, on the eastern hemisphere.

Barrow is an old lunar crater that is located near the northern limb of the Moon.

As it lies so close to the northern limb, it is view nearly from the edge making difficult to observe from the Earth.

From the Earth the crater appears on the northern lunar limb, and is seen from the side.

Lovelace is a lunar impact crater that is located on the far side of the Moon, just behind the northern limb.

Nansen is an old lunar crater along the northern limb of the Moon, on the eastern side of the north pole.

Pascal is a lunar crater that lies near the northern limb of the Moon, on the western side of the pole.

Desargues is an ancient lunar crater that is located near the northern limb of the Moon, on the western hemisphere.

The crater is located near the northern limb of the Moon, and so is viewed from the Earth at a low angle.