Mount Giluwe is the second highest mountain in Papua New Guinea at 4,367 metres (14,327 ft) (Mount Wilhelm being the highest). It is located in the Southern Highlands province and is an old shield volcano with vast alpine grasslands. Ancient volcanic plugs form its two summits, with the central peak the highest and an east peak about 2 kilometres (1.2 mi) away at 4,300 m (14,108 ft).