Which word is closest in meaning to “burial” in the sentence...

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Q3816606 Inglês
The secret history of Stonehenge




(Available at: https://www.nationalgeographic.com/history/article/stonehenge-1 – text specially adapted for this test). 
Which word is closest in meaning to “burial” in the sentence “in a larger area of burial mounds” (l. 17)?
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