I tend to agree.
However, I suspect this was taken near Vik, where the beach is indeed very black, so It might be hard to pull any detail out of it.
You're right, Eric: the sand is very, very black. I've looked closely at the original and it's possible to bring a tiny amount of detail only by raising the sand to a mid to dark grey, which looks wrong.
Phil, I felt the black gave it an anchor, but I can see your point. Perhaps I'll remove a little of it. That was about the furthest the waves were coming that day.
Rajan, I thought this was Kirkjufjara beach but searching on the net makes me wonder if it's Reynisfjara, a bit further east. Do you know?
Jeremy