Old Man of Hoy
At 450ft (137m), the Old Man of Hoy is one of the UK’s tallest sea stacks, and stands surrounded by some of the highest and most dramatic sea cliffs in Britain at St John’s Head. Found ascending from the ocean at Hoy, Orkney’s most hilly island, this red sandstone wonder was once an arch with two prongs for legs until sea and wind erosion took its toll. Although many geologists believe that the Old Man will one day collapse (there’s already a large crack), this magnificent sea stack is a playground for hardcore climbers. The first ascent took place in 1966.