Washington, Feb 20 (ANI): Acid Rain is posing a threat to thousand year old precious stone carvings at one the Mexico's most important archaeological sites. The pre-Aztec city of El Tajin, located on Mexico's Gulf coast, is famous for its temple pyramids and intricately carved reliefs.
Built in what is now the state of Veracruz by the Totonac, a civilization that reached its peak from the early 9th to the early 13th century AD, much of El Tajin refers to one of the names for the Totonac god of thunder, and remains unexcavated.
The site's most famous building is an elaborate niche-studded pyramid. The ceremonial centre also has a number of other temple pyramids, palaces, and courts for playing a ritual Mesoamerican ball game sometimes compared to basketball.
Experts say no other site has as many depictions of ball players and their equipment as the sculptures and carvings at El Tajin, whose inhabitants were apparently great fans of the game. But acidic air pollutants pumped out by oil-drilling platforms and power stations along the coast is slowly eroding these carvings.
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http://www.dailyindia.com/show/116457.php/Acid-rain-erasing-1000-yr-old-pre-Aztec-era-stone-carvings-in-Mexico