There are plenty of drumlins in County Down - but have you heard of the Mound of Down? If not, that is probably because it has been hidden from public view by trees and gorse for decades. But work is now under way to expose this fortification which could be about 1,000 years old. Tim Campbell, director of the St Patrick Centre in Downpatrick, said it was one of the largest megalithic hill forts in western Europe. "We have forgotten about it as it been overgrown with trees," he said. "It was the seat of the high kings when they...