Carstensz Pyramid

A 4,884-metre peak in the Sudirman Range of Papua, Indonesia, on the western half of the island of New Guinea. Carstensz Pyramid — also known as Puncak Jaya — is the highest peak of the Indonesian archipelago, the highest peak of Oceania (depending on continental classification), and one of the Seven Summits. The peak rises from equatorial rainforest on a massive limestone plateau, and the summit area holds equatorial glaciers — a phenomenon found nowhere else in the world. The glaciers are retreating rapidly, and the upper mountain that nineteenth-century explorers documented has changed substantially in the modern era.

The first ascent came in 1962 by an Austrian-led expedition. Heinrich Harrer — the same climber who had completed the first ascent of the Eiger Nordwand in 1938 — and his team of Phillip Temple, Russell Kippax, and Albertus Huizenga reached the summit on February 13, 1962. The Indonesian government's restrictions on foreign access to the region had delayed the first ascent for years; the Harrer expedition was granted special permission by the Indonesian president Sukarno. The summit was reached via the North Face Direct route, which has remained the standard line.

The technical difficulty of the standard route is sustained — multiple pitches of fifth-class rock climbing on solid limestone, exposed traverses, and a final summit pyramid that requires careful routing. The mountain is the most technical of the Seven Summits, and the climb requires actual rock climbing skill rather than the high-altitude trekking that suffices for Kilimanjaro and Elbrus. The fatality rate has been low, primarily because the peak receives few attempts. Access is logistically demanding; the approach involves a flight to Timika in Papua, helicopter or trek through the surrounding rainforest to base camp at 4,200 metres, and then the technical climb.

The political situation in Papua has affected access to the mountain throughout the modern climbing era. The proximity of the Grasberg copper-gold mine — the largest gold mine in the world — has produced security restrictions that have made independent climbing expeditions logistically complex. The mountain is climbed by perhaps 100 to 200 summit attempts per year, primarily by Seven Summits climbers who require the peak to complete the project.