Moctezuma's Treasure (La Noche Triste)

The account

The conquistadors loaded themselves with an empire's gold and ran for the causeways in the dark. The lake took the greedy first. The city above the lakebed is now one of the largest on Earth, and every metro excavation and sewer trench digs through the night the treasure drowned. One bar has already surfaced. The rest is under traffic.

Leads, where the trail points now

• Where the trail goes cold: Fleeing the city on the 'Sad Night,' Cortés's men sank under their stolen gold in the lake causeways, a massive gold bar dredged up in 1981 was confirmed in 2020 as Noche Triste loot. That is where any serious search begins.
• What you are chasing is The Aztec imperial treasury, dropped in flight. Work the documented record of Moctezuma's Treasure (La Noche Triste) back to primary sources and separate what is attested from folklore before you commit time or money.
• Confirm who owns and governs Mexico City (the causeways of old Tenochtitlan) and get written permission before any search; treat protected or archaeological ground as off limits.