In the rugged province of Xieng Khoaung in upper northern Laos are scattered more than 2,000 large carved stone jars. They vary in size, with the biggest standing at just over 2.5 meters tall and weighing in at 30 tons. The jars are believed to have been used for funerary purposes, with human remains (including teeth) found buried around some of the jars.
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Source: Phys.org