There is some evidence of exchange of ceramic vessels between Wari and Tiwanku colonists. (a) This Wari cup was found in a burial from the Middle Valley Tiwanaku cemetery at Chen Chen (photo courtesy of Nicola Sherratt). (b) This pottery fragment from the Wari patio group (Unit 9) on the summit of Cerro Baúl. Photo courtesy of Ryan Williams.
Isbell, William H.; Uribe, Mauricio I.; Tiballi, Anne; Edward P. Zegarra, 2018, "Visual database", https://doi.org/10.25346/S6/1B33FN.