In Humberstone (Chile), little was left of the saltpeter's prosperity. Near the old Fordlandia (PA), squatter houses are the last signs of the city built by Henry Ford. Armero (Colombia), had its population wiped out by the eruption of the Nevado del Ruiz volcano in 1985. Twenty-five years after a flood, ruins of Villa Epecuén (Argentina) expose the remains of the old water station.

• Documentary