This updated version of Macgregor and Phemister's original guide describes one of the classic areas of Scottish Geology. The most outstanding features of the geology of the Assynt area include the clear evidence of large-scale horizontal dislocations or thrusts which transported large sheets or nappes of rock towards the west, and the unconformable relationships between the Cambrian and Torridonian sedimentary rocks and the underlying Lewisian gneisses. The guide includes a brief summary of the geology of the region, written with special reference to the various localities visited during the 8 planned excursions, as well as a road log which covers the roadside exposures between Ullapool and Lochinver.