Scientists find a 25,000-year-old circular structure made of hundreds of mammoth bones

Scientists find a 25,000-year-old circular structure made of hundreds of mammoth bones In Russia, an unusually large structure from the last ice age has been uncovered, built from the bones of dozens of woolly mammoths. It’s the oldest known structure of its kind, dating back some 25,000 years, but its purpose is not entirely clear. …