And in Salvador, furnish important material for the investigation of the obscure problems of the Toltecs and Olmecs, and of the extension of Maya peoples on the Atlantic coAt Copan, it was hypothesized that most structures or plaza groups were residences. To test this hypothesis, Sanders and Webster dug small 2x2 meter excavations down to bedrock next to each mound in 17% of the known sites. These sites were carefully selected to provide representative coverage throughout the study area. If you are testing to see if a site was a domestic residence, what would you expect to find? What would you find if it were not a domestic residence?last of the Mexican Gulf from Campeche as far as Tabasco and Vera Cruz.