Quote (ThaScience)
According to Inca legend, Lake Titicaca was revered as the location where the god Viracocha created a race of giants and later, the first humans. The Inca maintained that the giants built Tiahuanaco and also many other cities and structures in the area. However, due to their great evil, Viracocha destroyed the giants in a world flood. This legend is still believed by the local Indian inhabitants to this day.
This sounds similar to the Nephilim story in Genesis and the ensuing great flood that Noah survived.