Yacumama means "Mother of Water," it comes from the yaku (water) and mama (mother). This enormous creature is said to swim at the mouth of the Amazon River as well as in its nearby lagoons, as it is its protective spirit.
A place like this is perfect fodder for conspiracy theorists, who might beckon to the fascinating idea that ancient giants could have created such huge and complicated monolithic structures.
During an archaeological excavation in Sayre, Bradford County, Pennsylvania in the 1880s, a number of human skulls were unearthed. These skeletons were anatomically correct, except for the anomaly of their projections ― two distinct 'horns' two inches above the eyebrow, and the fact that their average height in life would have been around seven feet tall.
These "giants" have been described as vicious, unfriendly, and cannibalistic. Despite their modest numbers, the Si-Te-Cah constituted a grave threat to the Paiutes, who were just beginning to establish themselves in the area.