Plunton Castle
... that Plunton Castle, although well defended by gun loops, a ditch and a 9-foot (2.7 m) wall, had a very rare security flaw in the arrangement of its ground-floor rooms?
... that <b id="mwA_8"><a href="./Plunton_Castle" id="mwBAA" rel="mw:WikiLink" title="Plunton Castle">Plunton Castle</a></b>, although well defended by <a href="./Embrasure" id="mwBAE" rel="mw:WikiLink" title="Embrasure">gun loops</a>, a ditch and a <span about="#mwt52" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"9"},"2":{"wt":"ft"},"adj":{"wt":"on"}},"i":0}}]}' id="mwBAI" typeof="mw:Transclusion">9-foot (2.7</span><span about="#mwt52" typeof="mw:Entity"> </span><span about="#mwt52">m)</span> wall, had a very rare security flaw in the arrangement of its ground-floor rooms?