Crab's eye lichen

Ochrolechia parella

Blipping this whilst in the van doing admin. 
11 brave souls are out tackling my Night Nav Ninjas fun completion course - a large bar of chocolate awaits each of them when they return.
Of course, as the weather is truly awful, there have been 5 drop outs, but learning slowly, had over subscribed places hoping for 12, so not that bad.
I arrived early and went for a wander. This beautiful and surprisingly common lichen caught my eye.