Mayan water reservoir in Mexican rainforest: Archaeologists find huge artificial lake with ceramic-lined floor

ScienceDaily (2010-08-27) -- Archaeologists have found an almost seven-foot-deep water reservoir the size of a soccer field, whose floor is lined with ceramic shards, in the Mexican rainforest. It seems that in combination with the limestone on top, the shards were supposed to seal the artificial lake. The system was built about 1,500 years ago. It is the first example of this design found for the Maya. It is not yet known whether the reservoir's entire floor is tiled.