MEXICO CITY - Mexican archaeologists say they have determined that the ancient Mayas built watchtower-style structures atop the ceremonial ball court at the temples of Chichen Itza to observe the ...
Volcanoes and jungle, a richly varied habitat / Nikolai Grube -- Cacao, the beverage of the gods / Nikolai Grube -- The origins of Maya civilization : the beginning of village life / Norman Hammond -- ...
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