Hidden Peak
Other eight-thousanders (mountains over 8,000 meters) that Habeler has summited are Cho Oyu, Nanga Parbat, Kangchenjunga and Gasherbrum I. He has also climbed Yerupaja Chico (6089 m) in Peru's Cordillera Huayhuash. The ascent of Gasherbrum I was made with Messner in 1975, Alpine-style in three days, and is seen by some as ushering in a new era of Alpine-style ascents of eight-thousanders, in contrast to the "siege" tactics which had largely prevailed to this time. It was the first time an eight-thousander had been climbed Alpine-style. Habeler attempted to climb Everest again in 2000 but failed to do so due to fluid in his lungs.