Joint Services Chilean Patagonia 1972-73
Eleven members of the British Services and two Chilean Army Officers (who withdrew from the expedition after one month) explored the northern Patagonia ice-cap (Heilo Patagonia del Norte) carrying out a programme of scientific research in the fields of glaciology, botany, emtomology, geopmorphology, meteorology, physiology and ornithology. They also conducted a survey of the area. The team also made an attempt on Mount San Valentin (4058m) but had to abandon their attempt due to poor weather.