Capuanus est un cratère de 60 Km situé dans la partie centrale méridionale de Palus Epidemiarum. La muraille est très érodée avec la partie occidentale plus haute. Le mur Sud est fortement impacté par des cratères. Tandis que trois crêtes montagneuses partent du mur Nord-ouest. Le mur Nord-est est presque englouti. Le fond est envahie par la lave donnant un aspect lisse impacté par de petits craterlets et la présence de dômes. On note aussi des zones blanches sur le plancher.  A l’Ouest on trouve le cratère Ramsden (25 Km, 1990 m) entouré  d’un   système   de   rainures Rimae Ramsden longues d’environ 130 km. A noter le remarquable cratère Marth (7 Km) au Nord ouest de Capuanus qui présente une double enceinte.

 (English version, Wikipedia copyright)

Capuanus is a lunar crater that lies along the southern edge of the Palus Epidemiarum. The outer rim is eroded and indented by lesser crater impacts, with notches in the north, west, and southern parts of the rim. The interior floor has been resurfaced by basaltic-lava, which is connected to the surrounding lunar mare by a narrow, crater-formed gap in the northern rim. The floor is particularly notable for the hosting a number of domes, which are believed to have formed through volcanic activity.

The rim achieves its maximum altitude along the western face, where it merges with ridges along the edge of the mare. To the northeast the rim dips down very close to the surface, and barely forms a curving ridge in the surface. The southeastern rim is overlaid by a pair of craters.

To the north of Capuunus crater is the western extreme of the wide rille named Rima Hesiodus, which runs to the east-northeast. To the west-northwest is the Ramsden crater, and between Capuanus and Ramsden lay a system of intersecting rilles named the Rimae Ramsden.