 In 1913 , 4 @,@ 550 m ( 14 @,@ 930 ft ) 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 4 @,@ 720 m ( 15 @,@ 490 ft ) Wilhelmina Peaks , which reached below 4 @,@ 400 m ( 14 @,@ 400 ft ) 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 4 @,@ 884 m ( 16 @,@ 024 ft ) high Puncak Jaya summit , which is estimated to have had an area of 20 km2 ( 7 @.@ 7 sq mi ) in 1850 . 
