Looking at the anunnaki role in history. The theory that the Step Pyramids of Mesoamerica, the terraces at Machu Picchu, and the Grand Gallery of the Great Pyramid at Giza, & other sites were all part of an Annunaki mining effort on a scale never before imagined. According to the work of the late Zecharia Sitchin, the Annunaki first arrived on Earth from the planet Nibiru, 450,000 years ago, and genetically tinkered with Homo erectus to create a slave species that could assist in their gold mining operations. Coming to the conclusion that aside from standard mining, the Annunaki were gathering “placer gold” – gold flakes or nuggets that have eroded from their original source, and could be harvested by running water over them.
Klarfeld first did research on Chaco Canyon in New Mexico, and later on the steep terraces at Machu Picchu, and found ribbed washboard configurations there. By pumping water down, it would bump against the ridges, and the placer gold would separate into the crevices, he explained. The Grand Gallery of the Great Pyramid has a cobalt ceiling which is an upside down washboard, he detailed, adding that previous researchers have shown how water was pumped into the structure, using a hydraulic pulse generator.