File:Haylie Chambered Tomb - Geograph.org.uk - 947353.jpg
As can be seen here, an original capstone is still present on the surviving chamber, which is the innermost of (probably) three original chambers. The grave was originally covered by a large cairn (called Margaret's Law), which was removed in 1772. This Neolithic site has been dated to between 3000 and 2000 BC.
For another view, see 757038.
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