“…These mounds, which are made up of spent soils from the extraction of salts from evaporation pans and the direct extraction of salts from soil, are a common site-type in the valley bottoms, and they are in direct association with tecuates (Neely et al, 1997). Salt processing was a major economic pursuit in Mesoamerica (Williams, 2009(Williams, , 2021. The Tehuacán region played an important role in salt extraction since at least the Classic period (Castellon Huerta, 2016;Neely et al, 1997;Ramírez Sorensen, 1996, 2008, as a province of the Aztec Empire (Berdan et al, 1996), and in the Colonial period for silver processing (Probert, 1969).…”