In 1968, after several attempts by some of the strongest Argentine climbers, a Japanese group led by Saburo Yoshida accomplished the first ascension of the south side. In 1971 an Austrian expedition led by Fritz Moravec and Othmar Kucera, climbed the north side. In 1972, Italians Sergio Job Gino and Antonio Beorchia Nigris climbed the Mercedario through the normal route and discovered some Inca ruins just below the summit. In January 1975 an Italian expedition led by Antonio Mastellaro managed to climb the east side.