From Sannox to Lochranza Coastal walk There is precious little limestone climbing in Scotland - the huge massif in Assynt has some potential, but at least in terms of bouldering there is something closer to home. I checked the geology map of Arran, which looks like a dartboard of colours around a swollen granite bullseye, and on the outer rim on the north east is a long coastal strip of limestone between Sannox and Lochranza. This is a mini-wilderness, with no road and the trail leads far away from the tourist strip of the Arran loop road. The 4 to 5 hour walk is fascinating in itself, the trail leading through old red sandstone to the Fallen Rocks which are a jumble of conglomerate boulders with maybe some potential, climbing the hill in a monolithic jumble to the giant crag of Creag a Chais (rock of cheese!). However, things change suddenly to limestone and just past the fallen rocks on the left is a sandstone/limestone sandwich forming a steep roof with some great looking problems o...