I was sitting right off the rim walk on a ledge behind some junipers while painting this one. Everything started out fine and then the clouds started moving in from the south. They put the closer ledge I was painting in shadow. I noticed that there were some holes in the clouds so I continued to paint the areas that wound be in shadow when the sun can back out. Finally the sun lite up the ledge again, just long enough for me to finish the painting. I barely got my stuff packed up before it started sprinkling.