Ice-Age mammoth bone structure discovered.

"An unusually large structure from the last ice age built from the bones of dozens of woolly mammoths has been uncovered in Russia. Dating back some 25,000 years, it’s the oldest known structure of its kind—but its purpose isn’t entirely clear.

Circular structures made from mammoth bones are surprisingly common in the archaeological record, dating to around 22,000 years ago and appearing across much of ice age Eastern Europe. Scientists working at the Kostenki 11 site, located next to the Don River near the Russian city of Voronezh, have found the largest one yet: a 12.5-meter-wide structure (41-foot) made from hundreds of woolly mammoth bones. The dwelling was radiocarbon dated to 25,000 years old, making it the oldest known mammoth bone structure in the world. Details of this remarkable discovery were published today in Antiquity." Read the full story.