We practically know nothing about the Pyramids, including why they are here and who built them.

These structures were built by multiple societies, all over the world, across different time periods, and they had absolutely no contact with each other whatsoever. That alone should raise an eyebrow. Why did they all build pyramids? What were their purpose? We simply don’t know, and we only have bits and pieces of this mystery solved.

Scientists have shown how sound waves ricochetting around the tired steps of the El Castillo pyramid create sounds that mimic the sound of the Mexican quetzal bird, a sacred animal in Mayan culture. This was actually first recognized by California-based acoustic engineer David Lubman in 1998. The ‘chirp’ can be triggered by clapping your hands at the base of the staircase, and only at the base of the staircase.