Join archaeologist Arthur Joyce at the CU Museum of Natural History Wed. Jan. 27, at 7 p.m. for this free lecture. Built in the late Terminal Formative period (AD 100-250), the acropolis was virtually in ruins by the Late Classic period (AD 500-800) when Río Viejo re-emerged as a political center. New rulers ritually reanimated the acropolis through the emplacement of an elaborate offering that referenced earlier offerings which included human burials, ceramic vessels and the probable remains of sacrificial victims, both human and animal.