Teotihuacan

"The place where men become gods." Sheets of mica hidden in its walls, purpose unknown.

At its peak (~450 CE) Teotihuacan was among the world's largest cities; its builders' identity and its sudden elite-quarter burning remain genuinely unknown — the Aztecs found it abandoned and named it 'place where gods were born.' Sheets of mica (an insulator) found layered in structures have no agreed explanation. The layout's echo of Giza's three-pyramid arrangement is why the two nodes link.