===Climbing===The first European who tried to climb the mountain was Alexander von Humboldt in 1802, however, he only reached a height of about 4500 m. In 1858 Moritz Wagner investigated the mountain, but he could not reach the summit either.
Veliko izbruhov je bilo tudi med letoma 1903 do 1904, manjše aktivnost so trajale vse do leta 1940 oziroma 1942.