Tenochtitlan/Tlatelolco Older than Previously Known

A pyramid uncovered in Tlatelolco dates to ca. 1100 - 1200 AD, the Early Postclassic. According to Aztec stories, the Mexica who settled the island had done so relatively recently. And Mexican history and archaeology has incorporated those stories for much of the 20th century. But this find suggests a significant settlement (with a 10 meter tall pyramid to either Tlaloc or Tezcatlipoca) up to three centuries before the Triple Alliance.