Trashi Yangtse Valley
Trashiyangtse District is one of the twenty dzongkhags (districts) comprising Bhutan. It was created in 1992 when the Trashiyangtse district was split off from Trashigang District. Trashiyangtse covers an area of 1,437.9 square kilometres (555.2 sq mi). The district seat is Trashiyangtse.
Three major languages are spoken in Trashiyangtse. In the north, including Bumdeling and Toetsho Gewogs, inhabitants speak Dzala. In the south, Tshangla (Sharchopkha), the lingua franca of eastern Bhutan, is spoken in Jamkhar, Khamdang, and Ramjar Gewogs. In Tomzhangtshen Gewog, residents speak Chocangacakha.
Trashiyangtse District contains Kulong Chu Wildlife Sanctuary, established in 1993, itself part of the larger Bumdeling Wildlife Sanctuary. Bumdeling Sanctuary currently covers the northern half of Trashiyangtse (the gewogs of Bumdeling and Yangste), as well as substantial portions of neighboring districts.