Located 20 km southeast from Santa Lucía Cotzumalguapa in Escuintla, Monte Alto was occupied as early as 1800 BC, but has a fairly light presence – less than either El Bálsamo or Los Cerritos Sur located about 10 km west and east of Monte Alto respectively.
Since both the heads and the bodies are rather crudely shaped from large, rounded basaltic boulders, the subjects have a decidedly corpulent appearance.
Since certain distinctive patterns of magnetism recur with some frequency, it would appear that the sculptures were executed by artisans who were aware of these properties.
If this is true, the Monte Alto sculptures no doubt deserve recognition as the oldest known magnetic artifacts in the world.
325–332 National Geographic Society, Washington, DC Popenoe De Hatch, Marion 1989 A seriation of Monte Alto sculptures In New Frontiers in the Archaeology of the Pacific Coast of Southern Mesoamerica.