The Fra Mauro formation on the Moon is the location of the
Apollo 14 landing site. It is named after the 80-kilometer-
diameter Fra Mauro crater, located within it. It is a widespread
hilly geological area covering large portions of the lunar
surface around Mare Imbrium, and is thought to be composed of
ejecta from the impact which formed the mare. The area is
characterized by ridges a few hundred feet high that radiate
from the Imbrium basin and are separated by undulating valleys.
The ejecta blanket is now buried by younger rubble and lunar
soil churned up by more recent meteoroid impacts and possible
moonquakes. Fra Mauro debris may have come from as deep as 100
miles (161 km) below the original lunar crust, and returned
samples provide evidence of when the Imbrium basin was formed
and help to establish the age and physical/chemical nature of
pre-impact material from deep in the crust. The southern edge of
Mare Insularum extends between the craters Lansberg and Fra
Mauro. The lower half of the section is oc