Real del Monte - Humboldt`s Travels (sitios de interés)
Descripción del sitio
Date visited: May 1804" After a few months in the valley of Mexico and after determining the longitude of the capital, which had been recorded with an error of nearly two degrees, [Humboldt, Bonpland, and Montúfar] visited the mines of Morán, Real del Monte."
A. v. Humboldt, “Philadelphia Abstract,” 1804
