Located in the North of Tanzania, nestled between Ngorongoro Crater and the Serengeti, lies one of the most important historical places on Earth. Mary Leakey, a famous archaeologist, is credited with most of the discoveries at Olduvai Gorge. Here, Leakey unearthed the earliest signs of human technology — this paleoanthropological site held the earliest known remains of ancient, tool-wielding humans. Archaeological knowledge gained from the Olduvai Gorge has changed our understanding of human origin forever. A nearby museum contains additional evidence and explanations for history buffs and archaeology enthusiasts.