Mourne Wall: Celebrating 100 years of the stone boundary

The Mourne Wall celebrates its 100th birthday this year with special celebrations having taken place over the weekend.
A listed structure that crosses 15 mountain summits, it’s the boundary of the huge water catchment area that feeds the Silent Valley and Ben Crom reservoirs
As well as celebrating its story stone masons are currently at work on the mountains to maintain its structure.
BBC News NI's South East reporter Cormac Campbell has been finding out what it entails.