Archeologists working in Mexico City are in process of excavating the first-ever Aztec royal tomb. The temple ruins are thought to belong to none other than Montezuma II, the last great Aztec ruler.
Among the many findings from the dig site is what appears to be a fearsome stone sculpture of Tlaltecuhtli, goddess of the Earth. In addition, electronic tests of the entrance, which is sealed with plaster, indicate there is an anomaly beyond it, which Dr López Luján, the discoverer of the site believes is a royal tomb, although some suggest it may be the equivalent of an ancient Greek bothro, where offerings to the underworld were placed.
More details may be unearthed here.