In 1913, high Prins Hendrik peaks (now Puncak Yamin) was named and reported to have "eternal" snow, but this observation was never repeated. The ice cap of Wilhelmina Peaks, which reached below in 1909, vanished between 1939 and 1963. The Mandala / Juliana ice cap disappeared in the 1990s. and the Idenburg glacier on Ngga Pilimsit dried up in 2003. This leaves only the remnants of the once continuous icecap on New Guinea's highest mountain, Mount Carstensz with the high Puncak Jaya summit, which is estimated to have had an area of in 1850.