In 1896/97 FitzGerald personally financed and led a large expedition to South America to complete scientific surveys and make first ascents of some of the highest peaks in the Andes. The expedition included a geologist, surveyor, engineer, and naturalist, and six alpine guides led by Zurbriggen. After reconnoitering the Vacas valley approach to Aconcagua, FitzGerald made a base camp at around in the
Horcones Valley, where several attempts were made to reach the summit via what is now known as the Normal Route. Five attempts were made over six weeks before Zurbriggen reached the summit alone on 14 January 1897. FitzGerald had been with Zurbriggen during the ascent, but on all attempts became nauseous at around . Eventually, fearing he would never reach the summit and the first ascent of Aconcagua would not be made, he sent Zurbriggen on alone. A period of heavy snow followed Zurbriggen's ascent, during which no further attempts could be made, but FitzGerald continued the siege a month later. Again he became ill during the ascent, but on 13 February 1897, the Englishman Stuart Vines and Italian guide Nicola Lanti also reached the summit. Later in the expedition Vines and Zurbriggen also made the first ascent of
Tupungato. ==Career and personal life after Aconcagua==