Even well measured mountains have conflicting heights on otherwise authoritative maps. For example, the highest point in Oceania, Carstensz Pyramid, was established to be 4884 m in 1973 when an Australian survey expedition put a beacon on the summit. This corresponded closely to the 4866 m estimate by the first Lorentsz Expedition in 1910 using repeated theodolite observations from the south coast. However, over time the mountain had grown in stature: measurements from northern observation peaks for the highest summit (each time Ngga Pulu) were 5000 m in 1910 by Ludolph Doorman and 5030 m in 1926 by Charles C.F.M. Le Roux. The 1936 Carstensz Expedition using barometric and boiling point measurements on the summit of Ngga Pulu also derived an elevation of 5030 m. After ascending the Pyramid in 1962, Heinrich Harrer even estimated that peak to be 17,096 feet or 5211 m high. The 1973 survey established that the 1936 barometric estimates were consistently between 118 and 127 m too high. Nevertheless, the 5030 m height is still prevalent in most atlases and maps.