🇲🇽 Mexico · Tell
El Cóporo (Ocampo)
Epiclassic (c.500–900 CE); Classic 500–650 CE, Epiclassic fortified 700–900 CE · Northern frontier Chalchihuites–Tunal–Bajío (Mesoamerican northern periphery; Chichimec interaction)
Bajío frontier mesa pyramid (c.500–900 CE) with ballcourt-terrace and copper bells — INAH Cóporo Tunal outpost.