 Villages around Slieve Coillte include New Ross, Slaught, Cassagh, Gusserane, Campile, Ramsgrange and Duncannon.On a good day the whole of the Hook peninsula can be overseen, up to the 12th Century Hook lighthouse on Hook Head, one of the oldest operational lighthouses in the world.Slieve Coillte is popular with hillwalkers, with thousands of people climbing the mountain every year.