No identification made yet.
No interactions present.
A sterile thallus, offering few clues - no soredia, isidia or apothecia - but it looks like a Pertusaria sp. Maybe.
An interesting area for lichens. Next door, Garn Boduan is rich in Usnea, but I have little patience for that genus. It's the coastal species on Llyn that excite me.
Lat/Lng: 52.9, -4.6
OS grid ref: SH3139