At the published coordinates, there is an interesting pile of rocks - how can you not resist seeing what is on top?
Your simple task is to obtain the necessary information which can be found nearby. The container can be found at N 51 24.EAE W 000 42.B(C+D-2)(E-1) where
A = lichen on the top rock in the section A of the photo
B = lichen on the top rock in the section B of the photo
C = lichen on the top rock in the section C of the photo
D = lichen on the top rock in the section D of the photo
E = number of slabs of rock (look around!)
Only the big lichen blooms count!
Top of the rock:
Climbing the structure is at your own risk!