The Moon may not be made of cheese, but it certainly is an imp.
Or, rather, it has an IMP.
An IMP is an Irregular Mare Patch, and they are strange-looking — almost “cheesy” — to say the least.
The IMP Ina, by the way, is located in The Happiest Place on the Moon, Lacus Felicitatis.
Feature Photo Source: NASA LROC via Wikimedia Commons.