Asia, Pakistani-Afghan Frontier, Istor-o-Nal and Other Peaks
Publication Year: 1970.
Istor-o-Nal and Other Peaks. A Czech expedition was led by Tibor Šurka. On June 25 Jožo Psotka, Juraj Zatkov and Ivan Fiala climbed Bajpash Zom (c. 22,000 feet) in the northern part of the Tirich group. On July 13 Pstoka and Milan Mereš climbed to one of the summits of Istor-o-Nal, which they gave as having an altitude of 7380 meters or 24,213 feet. It would seem more likely that they climbed to the top of the Rock Pinnacle (7200 meters or 23,622 feet). On July 16 Marian Šajnoha climbed Lesabar Zom (c. 20,000 feet); this peak, which is east of Istor-o-Nal, is difficult to identify.
Adolf Diemberger, Österreichischer Alpenklub