Mexico’s Lost Underground City: William Niven, San Miguel Amantla and the Stone Tablets of Mu

Matrix Wisdom, A Hidden History Podcast · Jul 16, 2026 · 28m

Did William Niven uncover evidence of buried civilisations beneath Mexico City? This episode investigates Niven’s 1921 discoveries at San Miguel Amantla, where he claimed to find three ancient cities stacked beneath the surface, separated by concrete floors and volcanic ash. From terracotta statues, stone buildings, white cement, arched doorways, goldsmith workshops, mysterious murals, East Asian-looking artifacts, jade beads, possible Chinese connections, and 2,600 undeciphered stone tablets, the discovery raises serious questions about pre-Columbian contact and the true age of ancient…