MEXICO CITY.- The Bat God Mask, golden objects from Tomb 7 in Monte Alban, Atzompa ceremonial vases, and the model of a mortuary rite, are part of the great exhibition Six Ancient Cities of Mesoamerica in the National Museum of Anthropology (MNA) that opened on March 17th 2011. Monte Alban, ancient city at the Mexican state of Oaxaca, opens the exhibition organized by the National Institute of Anthropology and History (INAH) with 2 stelae created to commemorate the first rulers of the city. The display of more than 400 objects testifies for the cultural development reached at 6 Mesoamerican cities: El Tajin, Palenque, Teotihuacan, Tenochtitlan, Tlatelolco and Monte Alban. Artwork that dates from 5th century BC, part of heaps of the National of Anthropology, Cultures of Oaxaca and Monte Alban Site museums, part of the INAH museums network, is exhibited at the section