In 1978, a Mexico City street dig unearthed a colossal Aztec stone disk that reopened the sacred heart of the ancient empire

In 1978, utility workers in Mexico City unearthed the massive Coyolxauhqui Stone, a significant Aztec artefact. This discovery revealed the Templo Mayor, the empire's religious and political centre, buried beneath the modern city. The find initiated a major archaeological dig, uncovering a vast complex and demonstrating that Aztec history remains present beneath the urban landscape.