The West Northwall Firn was a glacial body on Mount Carstensz in the Sudirman Range on the island of New Guinea in Central Papua province, Indonesia. The glacier was situated at an elevation of approximately 4,600 metres (15,100 ft) to 4,750 metres (15,580 ft), centered a little over 3 kilometres (1.9 mi) northwest of Ngga Pulu and 5 kilometres (3.1 mi) of Puncak Jaya, the highest peak of Oceania.