evidence: Drirapuk Monastery is an important post for pilgrims or visitors to rest before they walk onto the Droma la pass (5,700 meters). It is about 22-23 kilometers from Darchen and there are few simple tent-guesthouses. [...] Ali airport is the closest airport to Mt Kailash. The distance is 360 km which requires at least 6-7 hours’ drive; Then arrive at Darchen, which is the trek start, a walk of 6-7 hours is needed for reach Drirapuk monastery from Darchen.