Four of 21 people who scaled the world's 14 tallest peaks came from South Korea, where mountain climbing is a pastime. Oh Eun-sun claims to be the first woman to do so.
South Korea’s Oh Eun-sun claims she is the first woman to scale the world’s 14 highest peaks, after clambering on hands and knees to the top of Mount Annapurna in Nepal. But some in the mountain-climbing community question her claim. A by-the-numbers view of her feats.