This high-resolution 3-D view of the lunar soil is one of several obtained using a close-up stereoscopic camera placed at different locations by the Apollo 14 astronauts during their moonwalks. A “raindrop” pattern can be seen in this close-up image of undisturbed lunar soil. The raindrop patterns noticed by the astronauts are small pits formed by the continual impact of micrometeorites (smaller than 1 millimeter) into the lunar soil. Rock samples brought back from the Moon have impact pits as small as a few millimeters across. Apollo 14 landed in the Fra Mauro highlands in February 1971.
14 image AS14-77-10370.