In reply to melto1664:
Get yourself OS sheet 287 West Pennine Moors, and use the train, in particular the line from Manchester Victoria to Blackburn and Clitheroe.
Get off at Hall i' th' Wood ( first station after Bolton) and the Wiltons are not far to walk, especially if you follow footpaths and not roads. On the road there is an excellent pub (Bank Top) mid way between the station and the crags.
From Bromley Cross station it is easy to get to Ousel's Nest Quarry and the recently developed Jumbles Quarry across the valley. Egerton Quarry (Cox Green Road) is not a bad walk, and the Wiltons can be reached on foot from here. Plenty of moorland walking is in easy reach too, and the three reservoirs Jumbles/Wayoh/Entwistle with pleasant footpaths. Not far up the road from Ousel's Nest is the King William pub, not open Mondays.
If you go a bit further, get off at Entwistle Station: it is a request stop and you have to ask in advance. Close by is an excellent pub, the Strawbury Duck, and it is a nice walk to the Cadshaw area, quarries, natural outcrop, and nice walking around reservoirs and on the moors. You have to wave the train down to get it to stop for your return journey.