Descripción del sitio
Humboldt, Bonpland, and Montúfar “descended from Pátzcuaro towards the coast of the Pacific Ocean to the plains of Jorullo . . . They arrived almost to the bottom of the crater of the great volcano of Jorullo, of which they analyzed the air, and found it strongly impregnated with carbonic acid.”
A. v. Humboldt, “Philadelphia Abstract,” 1804