KROO-a-han
The royal seat of Connacht in Co. Roscommon, from which Queen Medb rules and launches the Táin Bó Cúailnge.
Cruachan is Medb and Ailill's royal court, the political heart of Connacht in the same way Emain Macha is Ulster's. It is from here that Medb assembles her army and sets out on the cattle raid that becomes the Táin Bó Cúailnge, and the site is described in the texts as a place of gathering, feasting, and the reading of omens before the campaign begins.
The real archaeological complex at Rathcroghan — one of the largest unexcavated royal sites in Europe — includes a cave locally called "the gate to hell" (Oweynagat), which appears in early Irish literature as a place otherworldly beings and monsters emerge from, tying the site to more than just Medb's court alone.
| Cycle | Entries here | Focus |
|---|---|---|
| The Mythological Cycle | 21 | The oldest of the four cycles, telling of the Tuatha Dé Danann and the successive invasions of Ireland. |
| The Fenian Cycle | 7 | Tales of Fionn mac Cumhaill and his band of warriors, the Fianna, set generations after the Ulster Cycle in a world of hunting, romance, and roaming adventure. |
| The Ulster Cycle | 12 | The heroic tales of Conchobar mac Nessa's court at Emain Macha, centered on Cú Chulainn and the great cattle raid of the Táin Bó Cúailnge. |
| The Historical Cycle | 1 | Also the Cycle of the Kings — legendary and semi-legendary tales of Ireland's High Kings, treated by medieval scribes as genuine national history. |
Cruachan (Rathcroghan), in modern County Roscommon, was the royal seat of Connacht and the home of Queen Medb and King Ailill, from which the invasion of Ulster in the Táin Bó Cúailnge is launched.
Yes — Rathcroghan is a real complex of over 240 archaeological monuments in County Roscommon, including Oweynagat ("Cave of the Cats"), a cave associated in legend with the Otherworld and with the Morrígan.
Oweynagat, part of the Rathcroghan complex, is described in medieval texts as an entrance to the Otherworld from which supernatural creatures emerge at Samhain, tying the real site directly into the mythology of Cruachan.