In reply to Ratfeeder:
I've not actually done it, I've abbed down to check another route and the gear looks good after the bolts, the crack does have the odd tuft of grass mind but I doubt this would affect the climbing or the protection...much.
Its also at the top of the graded list for slate e1's in dow duddon & slate.
Give it a go, it does look good I'll have to do it when I get chance I love our slate quarries!!
Darklands is a good route & not e3 anymore and only about 5b you should get on that while your there