1. The Olmec Stone Heads The Olmec colossal heads are at least seventeen monumental stone representations of human heads sculpted from large basalt boulders. The heads date from at least before 900 BC and are a distinctive feature of the Olmec civilization [...]
Official position of science presents the picture of the past in which humanity started from primitive beginnings, and steadily progressed upward in the development of culture and science. However many unearthed “out-of-place artifacts” create obvious contradictions to the conservative picture of antiquity. They don’t fit the established pattern of prehistory, pointing back instead to the existence of advanced civilizations before any of the known ancient cultures came into being.