Trivor. An Anglo-American expedition under the leadership of Wilfred Noyce made the first ascent of Trivor (25,325 feet) in the Hispar Muztagh. From the Trivor Glacier they reached the col between Trivor and Momhil Sar, where they established Camp III. Three more camps were pushed up the northwest ridge, the highest at about 23,000 feet. From there Noyce and the American Jack Sadler climbed to the summit in 8½ hours on August 17.