The first ascent of Deoban by Britishers by Frank Smythe's party On 4 August 1937. A twelve-member Indian Military Academy team climbed Deoban 1968. In August 2009 a nine members team of Ordinance Factories Mountaineers & Trekkers from west Bengal Led by Samrat Basu. In the post monsoon season approached Deoban from the Amrit Ganga valley. They established their base camp on the right bank of Amrit Ganga at Eri Udiyar. Camp 3 was established on Upper Bidhan glacier and summit camp at 6320 meter. They climbed the northwest ridge and finally reached via the west ridge. On 28 August Samrat Basu with Ashim Ghosh, Tapas Dey, Prosenjit Bagchi along with 4 high altitude supporters reached the summit.