From the shores of the island of Ulva, the setting sun casts a red glow on the now cold basalt rocks of Ben More on Mull. Once it spouted red molten magma from deep within the Earth and was the largest volcano in Europe. Today its lava fields cover 840 square kilometres and are up to 1.8 kilometres thick. The islands round Loch na Keal bear testament to this fiery past and are an irresistable magnet to any sea kayaker.