I love it when artists play with nature in their work. In particular I have a thing for that kind of art that puts nature into a different perspective and makes you look at it in another way. A selection of artists have done exactly.
It's not just a crack on the wall. "Find the cracks and exploit the discoveries to be revealed there . then move on to practice running headlong into the brick walls. Cracks crack first. Heads crack before brick walls. (from: STREET ART UTOPIA)"