At Newgrange, in County Meath, it's the rising solstice sun that illuminates the famous chamber – in Cailleach Beara's house on top of Slieve Gullion, it's the setting sun. The winter solstice ...

Slieve Gullion stands at 573 metres, the highest point in County Armagh. It is an extinct volcano and is the most spectacular example of a ring dyke anywhere in the British Isles. It's believed ...