Obsidian tools from the Shirataki Iseki site. Upper Paleolithic, 13,000–28,000 BCE, now housed at the Engaru Archaeological Center in Japan [1280×1828]
Obsidian tools from the Shirataki Iseki site. Upper Paleolithic, 13,000–28,000 BCE, now housed at the Engaru Archaeological Center in Japan [1280×1828]
