Thamserku is a mountain in the Himalayas of eastern Nepal. The mountain is connected by a ridge leading eastward to Kangtega. Thamserku is a prominent mountain to the east of Namche Bazaar and lies just north of Kusum Kangguru.^{[citation needed]}

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Thamserku
Dole village and Mt. Thamserku (to the right) and Kangtega (to the left) in the background
Highest point
Elevation	6,608 m (21,680 ft)[1]
Prominence	623 m (2,044 ft)
Coordinates	27°47′25″N 86°47′15″E
Geography
Thamserku Location in eastern Nepal
Location	Khumbu, Nepal
Parent range	Himalayas
Climbing
First ascent	1964 by Lynn Crawford, Peter Farrell, John McKinnon, Richard Stewart[2]
Easiest route	snow/ice climb

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The first ascent was made in 1964 from the south by members of Edmund Hillary's Schoolhouse Expedition: Lynn Crawford, Pete Farrell, John McKinnon and Richard Stewart. Below the basin on the southwest face, they reached the south ridge after climbing a difficult couloir. The team described the climb as difficult and the route has never again been repeated in its entirety.^[2] In 2014, Russian climbers Alexander Gukov and Alexey Lonchinskiy made the first ascent on the southwest face.^[2]