Nevado Tres Cruces, Various Ascents. A joint expedition by Bob Villarreal (USA), Fritz Radun (Germany) and Greg Horne (Canada) spent March 8 to 20 on this massif, climbing all three 6000-meter summits (first ascents in 1937 and 1973). The north summit (6030 meters) was climbed from Camp I at 5350 meters via the south slopes and east ridge by Radun and Horne. Camp II was established at 5940 meters near the col between the central and south summits. The main summit, south peak (6748 meters), was climbed by Horne from Camp II via the north and west slopes. Older maps and J. Neate's book indicate in error that the central summit is the highest. The 1994 Chilean 1:50,000 topo map, Macizo Tres Cruces 2700-6845, shows in very accurate detail this mountain. Villarreal unsuccessfully attempted the south summit from camp (6450 meters). The central summit (6629 meters) was climbed via the south snow slopes by Radun and Horne. Summit registers were left on all three summits.
Greg Horne, Alpine Club of Canada