The Sungir - Sunghir site near Moscow - About 24 000 years ago, a group of hunters and gatherers buried their dead - including two boys with physical conditions - using the utmost care. The roughly 10 and 12 year-old boys were buried head to head in a long, slender grave filled with riches, including more than 10 000 mammoth ivory beads, more than 20 armbands, about 300 pierced fox teeth, 16 ivory mammoth spears, carved artwork, deer antlers and two human fibulas laid across the boys' chests, the researchers said.