Drawing of a sequence of events showing a (pre-)historic man digging a hole and setting a wooden post into it, the post decaying over time, leaving nothing but a shadow and the soil imprint if the dug pit - excavated by an archaeologist.
https://files.mastodon.social/media_attachments/files/113/374/466/415/339/974/original/2ea51d4e6cc8188b.png