Zhangmu, also known as Dram in Tibetan or Khasa in Nepali, is a customs town and port of entry located in Nyalam County in Tibet, China. It is situated near the Nepal-China border, positioned just uphill and across the Bhotekoshi River from the Nepalese town of Kodari.
The town sits at an elevation of 2,300 metres (7,500 ft) above sea level. Notably, Zhangmu features a mild and humid subtropical climate, which is considered a rarity for the Tibetan region.