Rust, Stone, Stone.

My Blip is something I havent seen before, Nettle Clustercup Rust. It is a fungal disease caused by Puccinia urticata, and is apparently quite common on Nettles.  I have seen Nettles in lots of places but I cannot remember seeing this rust fungus before. I thought they were Caterpillars at first glance. This was taken at Ribblehead Viaduct.

My two extras are iconic stone monuments, but very different. A Magnificent working Viaduct, and a useless old wall (Hadrian's).