An Clochán Liath, known in English as Dungloe, is a town on the west coast of County Donegal in Ulster, the northern province in Ireland. It is the main town in The Rosses and the largest in the Donegal Gaeltacht. Dungloe developed as a town in the middle of the 18th century, and now serves as the administrative and retail centre for the west of County Donegal, and in particular The Rosses, with the only mainland secondary school for the area.