It's All in the Details - Round 2

After teasing you yesterday with the detail, and given that it is coming out of the sky in buckets and I am not going out in that, I think it only fair to show you what yesterday's image was of. Yes, it was a detail of a painting, and this is the relevant area of that painting that I teased you with. Those astute people will even be able to work out the angle from which I shot it.

Better biggified.