I came across lots of these trees today within an overgrown hilltop hill fort in the Scottish Borders. It looks a bit like a rowan or elder, but I'm pretty sure isn't either (we've got both species in our garden). I've tried to identify it online but no joy. Can anyone put me out of my misery?
Many thanks, Mike, for both the ID and the links. The various online ID sites I used all took me to elder, which I knew it wasn't (quite). The red elderberry's a new one to me too, but there seemed to be quite a colony of them where I was looking. I'll know them again now.