Mountain-dwelling allies of the Zapotec provide you with approximately 100 high-altitude Wood in crates for every 2 minutes of game length, up to 30 minutes.
—In-game description

Zapotec Cloud People is a technology in Age of Empires III: The WarChiefs that can be researched at a Trading Post built on a Zapotec settlement. Once researched, it ships 100 wood for every 2 minutes the game have passed, up to 30 minutes (for a total of 1,500 wood).

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