Limestone: The Building Blocks of Ancient .
04.09.2014 · Apparently, the location of the limestone structures, the shape of the steps and the porosity of the limestone itself create this chirping echo effect. She went on to say there are acoustic qualities in the Mayan limestone architecture. The chirping echoes had a religious meaning to the Mayans. According to the tour guide, the Mayans could "hear their gods" when listening to this sound ...
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