Trooping Funnel

This is a Trooping Funnel mushroom (apparently) which I found during a recent walk on the Downs in Kent.

You can't tell the scale from the picture but it was a monster. About 6" tall and about 5" across the cap.

There was a circle of them around the base of a large tree. Very impressive. They are supposed to be edible but I didn't want to take any chances.