Sherpas become first to complete winter summit of K2 Posted SunSunday 17 Nimsdai Purja and his team celebrate reaching the summit of K2. ( Print text only Cancel A team of climbers from Nepal have become the first mountaineers to successfully complete a winter attempt on the summit of K2, the world's second-tallest peak. Key points: K2 is notoriously dangerous for its steep slopes, with almost 90 climbers having died on the mountain The sherpas said they sang the Nepali national anthem as they reached the summit of K2 The Nepalese climbers' achievement was marred by Spanish climber Sergio Mingote falling to his death