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Ancient Burial Practices Emerge From Laos' Mysterious Plain of Jars

Archaeologists say the jar held secondary burials from at least 37 people and artifacts that point to repeated ancestral rites over centuries.

  • Researchers published findings on Tuesday in the journal Antiquity describing a large stone 'death jar' excavated at Site 75 in Laos, containing the remains of at least 37 individuals.
  • For nearly 100 years, the thousands of massive stone vessels scattered across the Xieng Khouang Plateau remained an archaeological mystery, but this study provides the first irrefutable evidence confirming the Plain of Jars functioned as a mortuary complex.
  • Radiocarbon dating reveals remains were deposited between 890 and 1160 AD, supporting a 'secondary burial' practice where decomposed bodies from smaller jars were reinterred in the large vessel over roughly 270 years.
  • Excavators recovered glass beads originating from South India and Mesopotamia, demonstrating that ancient Laotian communities were globally well-connected and actively engaged in regional trade networks during the medieval period.
  • Future bioanthropological and ancient DNA studies aim to determine ancestry and health of the individuals, helping researchers understand the specific people behind these megalithic monuments and their broader significance in Southeast Asia.
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The multi-ton vessels served funerary purposes, but it is not yet known how they were made.

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Phys.org broke the news in United Kingdom on Monday, May 18, 2026.
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