In reply to johncoxmysteriously:
Well, there's...
SMC Skye and the Hebrides Vol 2:
"Gribun, Creag Mhor (Map Ref 465 362)
Like Skye, Mull has many impressive basalt cliffs. The following route should be able to cure anyone of a desire to climb basalt.
Loosey Simmons 130m VS 3c (1987)
In the middle of the cliff is a deep gully, ten minutes from the road. Climb the ramp which slants up left from the base of the gully, and finish with a through route. The technique is to climb the route faster than it falls down. Parking below the gully is unwise.
The deep gully, attempted because it is there, has seen off at least three attempts. It is doubtful if any pleasure could be gained from the experience."
Honourable mention also to SMC Lowland Outcrops, Mauchline Gorge:
"Monstrously Horrible 15m Very Dirty
Slither up or down roots to the right. Several alternatives are possible, the best being to avoid it altogether!"