In reply to robal:
Yep there's some cracking stuff at Blacka, and I'm one of those people who frequently ride past your house, covered in mud and with a huge grin on my face !
Look here
http://www.bikehike.co.uk/mapview.php
and search for Dore, then change the left hand pane to OSMcycle and look for the green tracks - the're the bridleways.
The most obvious route goes from the car park near the junction of Stony Ridge road and hathersage road, double track with the woods on your left, through a gate into a open field, down to another gate and then a very rocky section down to a fork, left is steeper and takes you to a ford. Both are reasonable to ride up as well.
The steeper singletrack are accessed via a permissive Bway (not marked on maps) that runs parralel to the main road, that isn't marked on the map. You get to a couple of gates with a choice of routes - straight on is Devils Elbow, to the right is the harder Pipers Gate.
Have to say I've not ridden Pipers Gate for years, it's got a couple of sharp drops on it, and just when I was getting phyched to try it again I broke my full-suss! Devils Elbow is excellant and just within my range, although my last attempt, in the dark and very muddy, was less than impressive.
Other good stuff on Totley Moss and Womble Hill - go explore
