Macrobius est un cratère de 65 Km et profond de 3700 m situé au Nord-ouest de la mer des Crises (Mare Crisium). Sur son versant oriental on trouve le cratère Tisserand (37 Km). Tandis que sur le mur occidental Macrobius C se situe sur la crète. Les murs s’étalent en terrasses vers l’intérieur pour atteindre un vaste fond plat tourmenté de monticules avec un ensemble de crêtes au point médian.

 (English version, Wikipedia copyright)

Macrobius is a prominent lunar impact crater located to the northwest of the Mare Crisium. It lies on the southeast edge of the Lacus Bonitatis, a small lunar mare. The somewhat smaller Tisserand crater lies just to the east, and the two make a notable pairing.
The outer wall of Macrobius has a multiply-terraced inner surface, with some slumping along the top of the rim. The small satellite crater 'Macrobius C' lies across the western rim, but the wall is otherwise relatively free of significant wear. In the center of the floor is a central mountain complex. There is a low ridge in the western interior, but the remainder of the floor is relatively level.