All mountains in West Papua are in the Maoke Mountains, a translation of the name Sneeuwgebergte or Snowy Mountains endowed to them in 1623 by Jan Carstensz, at which time many of the peaks indeed were covered by extensive ice caps. By the beginning of the 20th century, at least five such glaciated regions remained on the highest mountains. In 1913, the 4520-4550 m high Prins Hendrik-top (now Puncak Yamin) was named and reported to have some eternal snow. The ice cap of Wilhelmina Peaks vanished between 1939 and 1963, while the Mandala / Juliana ice cap disappeared in the 1990s. The Idenburg glacier on Ngga Pilimsit dried up in 2003, leaving currently only the remnants of the glaciers on Mount Carstensz, the last of which are expected to disappear before 2050 and perhaps much earlier. The snow melt on the last mountain has caused a change of the highest summit of New Guinea: somewhere between 1936 and 1973 the title of highest summit of Oceania changed from Ngga Pulu, the highest point of the Northwall Firn (by then split into the West and East Northwall Firn; only small patches of the latter still exist), to the rocky spires of Carstensz Pyramid 3 km to its south-west.