Rathcroghan

Rathcroghan is a complex of archaeological sites near Tulsk in County Roscommon, Ireland. It is identified as the site of Cruachan, the traditional capital of the Connachta, the prehistoric and early medieval rulers of the kingdom of Connacht. Rathcroghan is one of the royal sites of Ireland. The ritual landscape extends over 6 square kilometres (2.3 sq mi) and consists of over 240 archaeological sites, 60 of which are protected national monuments. According to National Geographic, the site may be "Europe's largest unexcavated royal complex".

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