From Cahersiveen, County Kerry.
I took lots of cool pictures through the holes in the walls of Ballycarbery Castle, but this was my favorite. I edited to lighten the foreground so you can see the rock wall better.
The shape of this hole is just fascinating to me; my husband said it looks like a man with a hat playing the accordion, and I can see it! And the tranquil Irish countryside beyond just makes me want to step right through it into another world.