Two concentric ditches showing as crop marks at Thorney (Q17641739)

• matcher place: Buckinghamshire (relation 87460), Buckinghamshire (relation 172710), South Bucks (relation 2347277), Berkshire, Buckinghamshire and Oxfordshire (relation 3820628), Thames Valley (relation 4001795), Colne Valley Regional Park (relation 9171902), Wexham and Ivers Community Board (relation 15648081)
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  [timeout:300][out:json];
  (
      node(around:1000,51.50570,-0.50182)["historic"="archaeological_site"][~"^(addr:housenumber|.*name.*)$"~".",i];
      way(around:1000,51.50570,-0.50182)["historic"="archaeological_site"][~"^(addr:housenumber|.*name.*)$"~".",i];
      rel(around:1000,51.50570,-0.50182)["historic"="archaeological_site"][~"^(addr:housenumber|.*name.*)$"~".",i];
  );
  out center tags;

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archaeological site (Q839954)

historic=archaeological_site