Tashi Shagagh Jyochen Chhoyokhor monastery, known locally as Chhairo Gompa (goenpa, gumba), Chandanbari Gompa and historically Cherok (Tserok) Gompa, is situated in Marpha Village, Upper Mustang, in the Western Development Region of Nepal.
The gompa is thought to have been established in the 16th century by Lama Chhiwang Thilen and was the first Nyingma monastery founded in Mustang. Chhairo Monastery was the first monastery of the Nyingma school of Tibetan Buddhism founded in Upper Mustang
It is at 2680m about 20 mins walk south from Marpha town on the Annapurna circuit in the Dhaulagiri zone, on the left bank of the Kali Gandaki river reached by a small footbridge from the main road south of Marpha, and about 1.5hours walk north of Tukuche village, signposted to Chimang.
Chhairo is believed to be named after a local waterfall, the Nepali word for which is chhahara. An alternative etymology is that the gompa is named after the grove of juniper trees that it lies within, Chandabari compa (gompa of the sandalwoods).