sentences:  The Teuchitlán culture that built the site was one of several cultures in West Mexico during the Late Formative to Classic periods that participated in the shaft tomb tradition in which some, but not all, people were interred underground.Sometimes mortuary goods accompanied the deceased with objects such as ceramic vessels, hollow and solid figurines, shell ornaments, conch shell trumpets, jadeite, and ground stone objects.While Los Guachimontones was founded in the Late Formative period, there is some evidence of a Middle Formative occupation suggesting some temporal continuity at the site.