Milestone Continuation
From the top of the Milestone Traverse, walk diagonally right across heather and boulders towards the obvious small buttress.
The lower part is a slab with a dog-leg crack running up the left side (this buttress is more or less directly in line from the top of Milestone Gully / Little Gully, which is an alternative approach). This scramble can be done as a single pitch with a 50 metre rope.
Climb up the crack (some polish) or use holds slightly to the right of the crack. Take the dog-leg crack to the right (about 2 metres) and then head straight up, over the waist-high steepening and up the continuing ridge until the scrambling peters out. Nut belay. Steve Ashton suggests a possible intermediate belay, i.e. taking the crack to the right after the short dog-leg and belaying on the top of the large flake. I found it impossible to set up an secure anchor here when I tried it - fortunately, as he says, you can get off at the back here.
However, it’s a slightly more ‘interesting’ variant. It involves a difficult-ish move up the steepening, onto the continuing ridge. From the top, if you intend to descend, using Little Gully is a possibility, though I’ve never fancied down-climbing it. Otherwise head straight on (more or less East) for several hundred metres to meet North Ridge paths before attempting to lost height (or you may find yourself cut off by the steep cliffs of the back of the Milestone Buttress). Be very wary of descending the very large, loose gully that you will inevitably cross – the lowest part of it would drop you straight over a cliff.
There is, however, a traversing path onto safer ground just above the lowest part. Naturally, from the top of the scramble, it is also possible to continue up the North Ridge, or to walk round to Heather Terrace for further scrambling from there.