Love it. It kind of shocked me. I did an encaustic painting years ago that was very, very, similar. Same situation and I sketched it right away, later to become a 4 x 6 ft painting. It made me look at it for a while. I did it on cement drywall (the kind you use in bathrooms). My third area was carefully ground down to a shallow valley and reinforced with fiberglass resin. That is pretty freaky, or it is for me.