To mark the 50th anniversary of the first ascent of the K2 summit in the Himalayas the Italian Alpine Association is organising several treks to the mountain's base camps. Up to 60,000 people are expected to pass through some of the intermediate camps this year. The problems this causes include the insufficiently rapid degradation of biological waste at high altitude, the pollution of rivers, or damage to the vegetation through the gathering of firewood. A number of expeditions are also to make greater use of helicopters.