Well, there are some marvellous photos on the forum to come back to after a week away (Mike, Jari...). I've been in sunny Wales, but at a sporting event where unfortunately I couldn't even carry my phone never mind a camera, so the only good cloud views I have are stored in my memory banks.
Anyway, a friend sent a couple of photos and asked me if I knew what the clouds were. I said probably contrail, but they are a bit odd. Anyone here have an explanation? Taken near Bedale, N. Yorkshire.
The resolution isn't good enough to zoom in, but there almost seems to be a shadow, or another similar trail just behind the main one.
Anita, North Cumbria, UK