Cawfields Crag is half a kilometre long and, in places, a good 20 metres high. Unfortunately it is broken and vegetated and has received little attention. Two lines are described here, but there are more available. The crag is very similar in character to the other Whin Sill crags and also has the Roman Wall running along the top. The impressive quarried section above the pool has, as far as is known, been sensibly ignored.
Whinstone Quartz Dolerite, Permo-Carboniferous
This is bottom of the range Whinstone, only a slight improvement on the dreadful quarried variety.
No recorded routes.
One of the attributes of Whinstone is that it is renowned for being hopeless for boldering. Cawfields is no exception.
The first ascensionists of Engineers Buttress are unknown and P Baines and A Frazer climbed Earth Invasion some time prior to 1984. Mick Johnson is said to have done 15 routes, but the descriptions are not available.