I had always thought that the rock art site of Carr Brae near Glen Shiel took a bit of beating for a “ view “ but it certainly has some competition here . At the foot of the hill on the coast is one of Hutton’s unconformities .
The grid ref is as noted , 140 metres south of the Canmore one . The four “possible “ cup marks are almost certainly actual . http://canmore.rcahms.gov.uk/en/site/293550/details/isle+of+arran+lochranza+creag+ghlas/