Monolith of Tlaltecuhtli (Earth Lord), 1502, Mexica (Aztec), 4.19 x 3.62 m (Museo del Templo Mayor, Mexico City)
Additional resources:
Monolith of Tlaltecuhlti on Fordham University’s Tenochtitlan website
Another Tlaltecuhtli monolith at The Metropolitan Museum of Art
Information on the Tlaltecuhtli excavations from The Great Temple Project (pdf)
Report on the installation of the Monolith of Tlaltecuhtli at the Museo Templo Mayor