Maybe a mural, part 81: manhole covers?!

I think of a mural as being on a wall. (Not always. I posted a photo of a mural on the street in Dunbar/Spring.) This Arizona Daily Star article from April 26th is about Tucson sculptor Jason Butler putting art on manhole covers in the city of South Tucson:

Tucson project uses kids' vision to decorate 55 manhole covers on streets

Amazing.