Scotland’s tortuous coastline stretches for almost 10,000km on the mainland alone – or up to 16,500km if the islands are included. As well as picturesque fishing villages and stunning sandy beaches, there are sections of fantastic cliff scenery, including huge natural arches, deep geos (inlets) and – our subject here – mighty sea stacks. Am Buachaille, Sandwood Bay, Sutherland Rising 65m (213′), Am Buachaille – meaning the Herdsmen – rises as a splendid sentinal at the southern end of the almost legendary beach of Sandwood Bay (walk description) in the far northwest corner of Sutherland. The stack was first climbed…