Tirsuli (7074 m)

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Tirsuli is a Himalayan mountain peak in the Pithoragarh district of Uttarakhand, India. It is part of the complex of mountains, including Tirsuli West, Hardeol, Dunagiri, Changabang, and Kalanka, which make up the northeast wall of the Nanda Devi Sanctuary, in the Garhwal Himalaya. It rises at the northern end of the Milam Valley, which drains into the Ghori Ganga. This peak should not be confused with nearby Trisul, which is on the southwest side of the Sanctuary.
In 1939, a serious attempt on this peak by the successful Polish expedition to Nanda Devi East was abandoned after a night avalanche buried leader Adam Karpinski and climber Stefan Bernardziekiewicz at Camp 3.[4][5] Indian teams led by Mohan Singh Kohli and K. P. Sharma attempted the peak in 1964 and 1965, but turned back from about 18,000 ft (5,500 m).[6] [7] The peak was scaled for the first time on October 9, 1966 by another Indian team led by C. K. Mitra. They ascended the east face of the south-east ridge and then took the south-east ridge to the top, mounting the summit bid from Camp 5, at about 21,860 ft (6,660 m)