Lobate Scarp

The radius of the Moon has been reduced up to 100 meters during the last 800 million years. Experts believe that the cracks are called "lobate scarp 'is created by the breakup of fragile skin of the month because of cooling the interior.
Similar cracks first seen in photos taken near the equator of the Moon by Apollo astronauts. Fourteen new lobate scarp has been identified by the Lunar Reconnaissance Orbiter spacecraft, researchers report in the journal Science.

They are found mainly in the highlands. Experts believe that the crack was created by the outbreak of the fragile skin of the lunar month when the shrink - a process that seems geologically recent.
"One of the remarkable aspects of the scarp that (= slope) months is clearly still a new age," said Dr. Thomas Watters, from the Smithsonian Institution in Washington DC.

During the Apollo missions in the 70s, where the astronauts to detect several earthquakes, and Dr Watters believes, it is because of this newly discovered thing.
Lobate scarp has also been found on other planets in our solar system, including the Mercury, where they were much larger.