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(Freely adapted from Wikipedia)

 

Lambert  is a lunar impact crater (dia. 30 Km, dept. 2.7 Km) on the southern half of the Mare Imbrium basin.

The crater is relatively easy to locate due to its isolated position on the mare. It has an outer rampart, terraced inner walls, and a rough interior that has a comparable albedo to its surroundings. Instead of a central peak, a small craterler lies at the midpoint of the interior.

Just to the south of Lambert's ramparts is the lava-covered rim of a crater that is almost completely covered by the mare. The diameter of this ghost crater is slightly larger than Lambert, but it is difficult to spot except when the Sun is at a very low angle. The feature is designated Lambert R.

 

Mons La Hire  is a solitary lunar mountain in the western Mare Imbrium. It is located to  the west-northwest of Lambert.

It has a maximum diameter at the base of 25 km. The mountain base has a shape roughly like an arrow head, with the point oriented toward the west-northwest. The peak has a height of 1.5 km above the surface.

This feature was named after Philippe de la Hire, a French mathematician and astronomer.

Dorsum Zirkel is a wrinkle ridge in Mare Imbrium on the Moon. It is 193 km long.

 

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