This study of saltmaking in coastal Michoacan underscores the
value of ethnoarchaeology as a tool for assessing ancient
saltmaking activities. Common salt (sodium chloride) was a
strategic resource of great importance for Mesoamerica during
pre-Hispanic and Colonial times. This study deals with salt
production in La Placita and neighboring areas of coastal Michoacan
and Colima, in western Mexico. The primary goals are to document
traditional saltmaking techniques—in particular, the material
culture, organization of work, ecological setting, and levels
of production observed in the study area, as well as the importance
of salt manufacture and trade for the area's economy and
culture over time. Ethnographic observations together with
ethnohistorical and archaeological data shed light on the
pre-Hispanic production, use, and commerce of salt in the coastal
area of Michoacan, one of the least studied regions in Mesoamerica.
There are three types of sites in the study area: (1) sites
where salt is currently being produced; (2) abandoned sites
where salt production was carried out until some fifty years
ago; and (3) archaeological sites where salt may have been produced
and/or distributed in ancient times. The material evidence of
salt production consists of: (1) terreros, or mounds
of leached soil; (2) eras, or solar evaporation pans;
and (3) specialized pottery types. Finally, this paper uses
archaeological and historical evidence, as well as oral traditions,
to discuss ancient salt exchange and trade networks.