# A small brook; a rivulet. # A long narrow straight valley on the moon's surface
They are called "rilles".
CRATERS
Rilles.
Yes, both the earth and moon have rilles. A rille can be defined as a small brook (as on Earth) and as a long narrow straight valley on the moon's surface.
rilles
Maria
i love marshmello rilles
They are narrow trenches or small, narrow valleys.
Ridges, rilles, craters and regoliths
Maria, terrae and sinuous rilles.
They may be known as faults, joints or more generally as discontinuities. Please see the related links for more information.
Rilles, ray craters , and highlands