During 1880, Whymper made two ascents of Chimborazo (6,267m), claiming the first ascent, though Alexander von Humboldt had ascended the volcano in 1802. He spent a night on the summit of Cotopaxi and made first ascents of Sincholagua, Antisana, Cayambe, Sara Urco and Cotacachi. In 1892, he published the results of his journey in a volume entitled Travels amongst the Great Andes of the Equator.