Fra Mauro est le reste usé d'une plaine lunaire murée de 95 Km situé au nord-est de la mer des connaissances (Mare Cognitum) et au sud-est de la mer des Îles (Mare Insularum). Attachés au mur méridional de Fra Mauro on trouve les cratères co-jointifs Bonpland (60 Km) et Parry (48 Km, 560 m). La muraille survivante de Fra Mauro est fortement érodée, avec des incisions et des ouvertures dans les murs du nord et est. Le mur Sud est déformé par ses deux voisins. Le reste de la muraille se compose d’arêtes basses et irrégulières. Le plancher de cette formation a été couvert par la lave dont la surface est traversée par des fissures allant du mur nord à celui du sud. Il n'y a aucune crête centrale. A la place on trouve le cratère minuscule Fra Mauro E (4 Km). Juste au nord de la plaine murée se situe l'emplacement de l’atterrissage de la mission d'Apollo 14.

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Fra Mauro is the worn remnant of a walled lunar plain. It is part of the surrounding Fra Mauro formation, being located to the northeast of Mare Cognitum and southeast of Mare Insularum. Attached to the southern rim are the co-joined Bonpland and Parry craters, which intrude into the formation forming inward-bulging walls.

The surviving rim of Fra Mauro is heavily worn, with incisions from past impacts and openings in the north and east walls. The rim is the most prominent in the southeast, where it shares a wall with Parry. The remainder consists of little more than low, irregular ridges. The maximum elevation of the outer rim is 0.7 km.

The floor of this formation has been covered by basaltic-lava. This surface is almost divided by clefts running from the north and south rims. There is no central peak, although the tiny 'Fra Mauro E' crater lies at almost the mid-point of the formation.

Just to the north of the walled plain is the landing site of the Apollo 14 mission. The crew sampled breccia that had been deposited here by the Imbrium basin-forming impact, and which partly covers the Fra Mauro crater. This rough debris blanket of ejecta is referred to as the "Fra Mauro Formation".