cradle of humankind. olduvai gorge scenic view in the great rift valley, tanzania, east africa.

world wilderness view vegetation valley unesco understanding tree terrain tanzanias tanzania surrounded stand soil sky sites site showcasing scenic scene rugged rocky rock rift ridge rich plateau photorealistic partly paleoanthropological olduvai nature mountains mountain lush landscapes landscape landmark includes importance humankind human horizon history historical hill highlighting heritage greenery green great grass gorges gorge geology geological