In reply to webbo:
Yes that has happened on occasion but it is exercise at least. For Glaisdale Head I'd park at any of the lay-bys to the west of the boulders, it doesn't take long but involves a bit of heather bashing.
As for Arncliffe, once your across the river and following the path south it breaks off uphill on the flagstones, after about 5 minutes there's a large buttress to the right just past a bench which is sleeping buttress, some of these are quite high but there's a few on the front face that are short sitters with another small boulder just after this on the left, carry on past this for 100m or so as the track bears right and there's some good lowball stuff in the woods to the left starting with a nice little roof which will be visible.
Arncliffe would've been bone dry today but unfortunately the weather looks terrible for the rest of the week, it needs several dry days at least and some sun would be nice, Glaisdale maybe a day or so.