megalithic, La Sergenté passage grave on #jersey. dates from approx 4500 BC and is the only corbelled passage grave known from the Channel Islands, and possibly the earliest dolmen on the island. The main chamber is about 12 feet across, it was excavated in 1923. Photo by our member Karolus, more on our page: https://www.megalithic.co.uk/article.php?sid=14829 #archaeology #ChannelIslands
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