Explore the highest mountains in the world that includes Mount Everest (8,848 m) in the Himalayas spans Nepal and China. Other notable peaks include K2 (8,611 m) in the Karakoram, Kangchenjunga (8,586 m), Lhotse (8,516 m), Cho Oyu (8,188 m), Makalu (8,485 m), Dhaulagiri I, Annapurna I (8,091 m), and Nanga Parbat (8,126 m, “Killer Mountain”).