strange maps has an interesting historical run-down, very light on the linkage, but easily remedied by pointing Wikipedia at “hollow earth“. I might have posted on this subject while I was reading the relevant passage in Against the Day, but that was another thing that happened during the slump.

One thing that strikes me about this handsome graphic is that it could form the basis of quite an interesting pinball machine, if anyone is still making those.

(via plep)