Keywords/search terms: sacrifice, sacrificial altar, piedra del sol, Mexica culture, post-classic Mexica style, National Anthropology Museum (Mexico City), Aztec symbolism, irregular basalt slab, Moctezuma II, created between 1502-1520 (what else was happening in the Aztec empire at that time?), Ancient Mexico
PRO TIP: The museum housing the work of art may have GREAT info on the piece!! Piedra del Sol, Museo Nacional de Antropologia
Select Academic Journals from the source list after doing a search!