Ground Up has joined forces in 2010 with Peak District climbing stalwart, Mark 'Zippy' Pretty to produce a rock climbing supplement: "Recent Developments on Peak Limestone". Activity on the Peak limestone crags continues apace, with numerous new routes being produced by a small but dedicated cohort of activists. There has also been much re-equipping work and rationalising of neglected routes in recent times. This supplement documents these changes and gives details of the new routes with a deliberate emphasis on clip-ups of F7a and above. It follows in the tradition of previous "Recent Developments" supplements dating back to the classic Steve Bancroft supplement published in 1977. It includes full colour topos showing the new lines on the intensely developed Raven Tor. There are also a couple of graded lists - an expression of the current consensus on relative standards of difficulty in the Peak sport climbing scene. Jon Fullwood has written a very useful bolting best practice article and a number of excellent action photographs have been supplied by top climbing photographers: Keith Sharples, Ian Parnell, Stu Littlefair and Adam Long.