That its name has a Norse derivation suggests that the site was occupied in the time of the Vikings, if not before, and evolved into a mediaeval castle site, for it is not an ideal defensive position. It stands in a wide bay, between the headlands of Rubha Aird an Iasgaich (Point of the Fishing Height), in the lee of which is the Calmac pier, and, in the foreground of the above picture, Rubh’ a’ Mhile (Point of the Mile).
This photo shows Mingary from the east. The castle’s curtain walls, up to 14m high, form a hexagon. The longest and thickest wall is to the north, facing onto a neck of land which is cut by a defensive ditch 7.5m wide and 3m deep. There is a sea gate in the south wall, and a rock-cut stairway leads from the beach at the west to a land gate in the NW wall. The walls enclose a courtyard roughly 20m N-S and 18m E-W, within which rise three ranges of buildings. Sadly, the state of decay of this historic castle is such that its interior is inaccessible.
A map showing the location of the castle is here.