« Click on thumbnails to enlarge photos » Carstensz Pyramid (Punkak Jaya) Probably the most logistically challenging mountain out of all the Seven Summits. It is located on the sparsely populated Indonesian Island of West Papua New Guinea-Irian Jaya. QUICK FACTS Mountain: Carstensz Pyramid (Punkak Jaya) Continent: Australasia Country: Indonesia Range: Sudirman Height: 16,023 ft / 4,884 m Summit Date: Oct 25, 2003 Route Climbed: Normal First Ascent: 1962 Heinrich Harrer