The Maya's ingenious secret to survival - Zeolite

[NomoneyNohoney]

https://www.bbc.com/travel/article/2021 ... o-survival

Standing in the ancient Mayan city of Tikal in Guatemala, visitors are surrounded by steep limestone pyramids nearly as tall as Notre Dame cathedral while the calls of howler monkeys and toucans emanate from the site's rainforest backdrop. Constructed without the aid of beasts of burden, metal tools or the wheel, these grandiose stoneworks served as the seats of power for the kings and priests who ruled over what was one of the most influential city states in the Maya realm, which spanned Mexico's Yucatan Peninsula, Guatemala, Belize as well as portions of Honduras and El Salvador...