Have you been to Rocklands before? Do you know how to get to the Fortress? Bastille is just to the right of the Fortress if you look at it from the car park.
Basically you walk along the path & (before the wild west wall) you will see a cairn to go right. You walk up to that path all the way up. Takes about 30-40mins.
See WCC (p190) for a map (it doesn’t show the actual path that I mentioned above)
Also be sure to check out Adultword - Adultworld RD
It’s a really stunning crag, just past (behind the Bastille) see image below.