Fungi or Lichen?

Fungi or Lichen?

Observation - Fungi or Lichen?. Description: Encountered this by Strinesdale lower reservoirs, in Oldham. At first I thought it was a lichen, but after some discussion we suspect it may be some sort of fungi. Frilly in appearance, similar to some lichens, but whilst dark on top was light underneath

Encountered this by Strinesdale lower reservoirs, in Oldham. At first I thought it was a lichen, but after some discussion we suspect it may be some sort of fungi. Frilly in appearance, similar to some lichens, but whilst dark on top was light underneath with hairy spike like structures. Was about the size of a large dinnerplate, and noticed several other specimins nearby.