Go to Saltaire train station (the one after shiply)
Walk up the train station ramp carry on strait forard to a road then turn left so your going over the train station bridge and down that hill to the bottom
Go over the bridge that leads into the park and and keep going strait through the park for a tad then get off it and get on the road thats on the right hand side of you
You should see a big ish building with a car park then a path running along the side of it that goes into some bushes where theres a big hill of trees going up
Go up that path keep following it up, youll know if your on the right one, its a bit of a trek (and at the base of the hill is shiply tram line on your right as you set off up the hill)
Once your at the top of the hill theres like amusments and shops and stuff. just keep following the road up
There should be a pub on your left eventually thats the start of shiply glen
Then all the rocks are just on that grassy stuff (N)
theres usully a group of riders up there each weekend, otherwise just organise a ride and then meet someone who knows where there going at leeds train station :-