"Mercury in Teotihuacan" Topic

A Mexican archeologist hunting for a royal tomb in a deep, dark tunnel beneath a towering pre-Aztec pyramid has made a discovery that may have brought him a step closer: liquid mercury.

In the bowels of Teotihuacan, a mysterious ancient city that was once the largest in the Americas, Sergio Gomez this month found "large quantities" of the silvery metal in a chamber at the end of a sacred tunnel sealed for nearly 1,800 years.

"It's something that completely surprised us," Gomez said at the entrance to the tunnel below Teotihuacan's Pyramid of the Plumed Serpent, about 30 miles (50 km) northeast of Mexico City…

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High levels of mercury are also mentioned regarding the tomb of Emperor Qinn.

According to the scientific exploration and partial excavation, much metal is present in the underground palace and it also features a very good drainage system. Sima Qian's text indicates that during its construction the tomb may have reached groundwater, and the water table is estimated to be at a depth of 30 meters. An underground dam and drainage system was discovered in 2000 and the tomb appeared not to have been flooded by the groundwater.[14] Anomalously high levels of mercury in the area of the tomb mound were found.[15] This gives credence to the Sima Qian's account that mercury was used to simulate waterways and the seas in the Mausoleum of the First Qin Emperor. However, some scholars believe that if the underground palace is excavated, the mercury will quickly volatilize.