Eamhain Mhacha

Navan Fort, in Modern Irish Eamhain Mhacha is an ancient monument in County Armagh, Northern Ireland. According to Irish mythology, it was one of the great royal sites of pre-Christian Gaelic Ireland and the capital of the Ulaidh. It is a large circular enclosure—marked by a bank and ditch—with a circular mound and the remains of a ring barrow in the middle. Archeological investigations show that there were once buildings on the site, including a huge roundhouse-like structure. The site is believed to have had a pagan ceremonial purpose. According to the Oxford Dictionary of Celtic Mythology, "the [Eamhain Mhacha] of myth and legend is a far grander and mysterious place than archeological excavation supports".

The name Eamhain Mhacha is thought to mean "the pair of Macha" or "the twins of Macha". 'Navan' is an anglicisation of the Irish An Eamhain.

Source: Wikipedia