Honestly? It looks like a car drove by it and splashed mud everywhere. Maybe it rained.
"Lost" style TSFS conspiracy theories!
John Locke: "We're not the first people on this planet, and we all know it!!"
When I was getting the pictures for the thread, I had this strange scenario play out in my head, in which a team of explorers beamed down to Genesis, and used a laser torch to open Spock's casket. Perhaps they reasoned that his cells would breakdown and regenerate, and that he would need to breathe?