Lunar Caricature

"This piece was likely drawn by a lunar resident, left there ages ago. We know these people as the Greys now. We dated this image back about 2000 years, but the wear is minimal thanks to the vacuum of space preserving it. Due to having no prominent facial features, they tend to draw people's facial contours with a whole lot of...emphasis? It looks quite squished around, as you can see."

Found by Gurren by !scavenging in The Moon.