Welcome to the jungle.

Look at the dense undergrowth, the towering trees and the unscalable sheer cliff face...

... well it would've been if I'd been 2mm tall.

No. It's simply a covering of Marchantia polymorpha, the common liverwort.

I think they are absolutely beautiful; both in appearance and by biological properties. Follow the link for information.

The location of this mini-jungle? Right underneath a very nondescript window at the Newent factory. Such elegance under one's nose.