We’ve all heard of the mystical and wondrous ancient civilizations of Mesoamerica and South America: The Maya, Olmecs, Aztecs, and the Inca. But one culture that developed on the southern end of Lake Titicaca in present-day western Bolivia near the border with Peru left behind ruins so monumental they continue to intrigue archaeologists and spark hypotheses of anachronistic, advanced technologies. The Inca referred to Lake Titicaca as their origin place. The culture that evolved in the region became known as Yaya-Mama, or “Father-Mother,” for the sculptures depicting dualistic Male-Female opposites. The remains of the capital city for this society are now known as Tiwanaku, one of the most significant archaeological sites in South America. Beginning as a small village in the BCE period, Tiwanaku grew to an enormous metropolis for its time. Peaking around 700 to 1000 CE, with a population near 40,000 and as many as 500,000 people settling in the high plains valley, what remains is...