Halberry Castle (2)
The main defensive feature of the site is plain to see here, a deep and wide ditch cut across the neck of the promontory.  Once again, I have no doubt that two birds were killed with one stone, so to speak, by quarrying the stone for the castle buildings at the same time as excavating the fosse - which is 25 ft wide, far wider than it needed to be.  The fosse is crossed by a causeway, which would seem counter-productive and was perhaps built long after the castle stopped being a castle.
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