Tsetang (Tibetan: རྩེད་ཐང, Wylie: rtsed thang, THL: tsé tang)[1][a] or Zedang (Chinese: 泽当镇; pinyin: Zé dāng zhèn),[1][b] is the fourth largest city in Tibet and is located in the Yarlung Valley, 183 km (114 mi) southeast of Lhasa in Nedong District of the Shannan Prefecture in the Tibet region of China.

[2] Tsetang has been the capital of the Yarlung region since antiquity and was the seat of the ancient emperors of Tibet and, as such, a place of great importance.

Samye, Tibet's first monastery, is located only 30 km (19 mi) from Tsetang and was founded in 779 CE by King Trisong Detsen.

There is, however, the reconstructed Gelugpa Sang-ngag Zimche Nunnery, in the ruins of Samten Ling with a 1000-armed statue of Chenresig (Avalokiteshvara) said to have been made by Emperor Songtsen Gampo (605 or 617?

[7] One of three caves in the mountainside to the east of the town is said to be the birthplace of the Tibetan people who resulted from the mating of a monkey and a beautiful cannibal ogress.