Another mortuary practice known as the "Mololoa Urn Tradition" emerged in the vicinity of the Mololoa River, in the Matatipac Valley. This tradition involved the cremation of the dead, whose ashes and bone remains were placed in clay urns and buried. A remarkable example of this funerary custom is a collective burial composed of multiple urns surrounding a stone altar, discovered in the López Mateos neighborhood of Tepic.