sentences:  Archaeological investigations have revealed that the site was occupied from the Middle Preclassic right through to the Late Postclassic.Obsidian from the Ixtepeque source started to be used from the Terminal Classic onwards and is used as a diagnostic marker for dating finds to the later periods of occupation at the site, when Ixtepeque became the principal source of obsidian for Topoxte and the wider Maya lowlands.The site was abandoned at the end of the Classic period (ca.