Nine years later, another claim to the world altitude record was made by Martin Conway in the course of his expedition to the Karakoram in 1892. Together with Matthias Zurbriggen and Charles Granville Bruce, Conway made an attempt on Baltoro Kangri and on 25 August reached a subsidiary summit which he named Pioneer Peak. The barometer showed a height of 22,600 ft (6,900 m) which Conway optimistically rounded up to 23,000 ft (over 7,000 m). However, Pioneer Peak has since been measured at only .