Philip Tranter and three friends drove a Land Rover 6,000 miles overland from Scotland to Nuristan to explore some of the unknown Central Hindu Kush area. They set out to attempt the second ascent of the monstrous Koh-i-Krebek; to ascend if possible at least one other major unclimbed mountain and to map that previously unmapped terrain. In fact, as well as Krebek they climbed nine other major peaks, named another dozen, and established the existence of a dramatic rock and ice range which they called the Rum Mountains, and christened individually after the Hebridean peaks they resembled in shape and beauty. The story of the expedition is told with an infectious enthusiasm for the glory and challenge of these mysterious peaks.