Dún Fearbhaí, also known as Dún Mur or Fearboy’s Fort, is a stone fort on the island of Inis Meáin. The fort stands in relatively good condition.
It contains two walls and one terrace built on a steep incline overlooking Galway Bay. It is the smallest of the forts in terms of area and also has an unusual ‘D’ shape as a result of it following the natural contours of its setting.
Unfortunately little is known about the fort and the date of when it may have been constructed is unknown.