A boy in a green jacket touches a display while a girl in a yellow jacket watches nearby.
Two children explore interactive history exhibits at the Rathcroghan Visitor Centre near Tulsk. Courtesy Failte Ireland

Tulsk – Rathcroghan and the Cave of the Cats

📍 Tulsk, Roscommon

🏛️ Attraction
🕒 Opening hours
09:00–17:00 Mon–Sat; last museum admission 16:30
🎟️ Admission
Exhibition Tour: Adult €6, Senior/Student €5, Child under 10 free, Child 10+ €3. Site + Exhibition Tour: Adult €20, Senior/Student €18, Child 10+ €6
🅿️ Parking
Free car and coach parking on site.

Last updated: 11 July 2026

Overview

The reason to stop in Tulsk is what surrounds it. Rathcroghan – Cruachan Aí, the ancient capital of Connacht – spreads across roughly two and a half square miles of unexcavated pasture around the village, more than 240 monuments in all: royal burial mounds, ringforts, Stone Age tombs and the Oweynagat cave. It is the oldest and largest unexcavated royal site in Europe, and Tulsk, a small farming village of 241 people on the N5 in north-west County Roscommon, is where you buy the ticket and pick up the guide.

History and mythology

Long before the village appeared on any map, this was the ceremonial heart of Connacht: the royal capital and, in the early literature, the seat of Queen Medb, who launches the Táin Bó Cúailnge, the Cattle Raid of Cooley. Every autumn the province gathered here for the Óenach Cruachain, a festival of trade, law, poetry and games that fell at Samhain, the turn of the harvest into winter and the night the boundary with the Otherworld was said to thin. Modern Halloween traces back to it.

Surveys have confirmed settlement here from the Mesolithic through the medieval period. Alongside the mounds stand the ruins of a 15th-century Dominican priory founded by the O’Conor family, once home to a small community of about six friars, a short walk from the visitor centre.

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What to see and do

Rathcroghan Visitor Centre

The Rathcroghan Visitor Centre (Cruachan Aí) is the place to start, and honestly the place that makes the rest make sense – out on the ground the mounds are grassy bumps, and the interpretation is what turns them back into a royal landscape. Inside, interactive displays, finds and film cover everything from Iron Age metalwork to the medieval O’Conor kingship, and the Óenach Cruachain collection gathers 35 significant artefacts that were previously only on show at the National Museum of Ireland. If you would rather explore alone, a self-guided museum tour is available (galleries open 09:15–16:30).

The archaeological landscape and Oweynagat

The best of the site is the guided archaeological tour: about two and a half hours across the pastureland, taking in Rathcroghan Mound and Oweynagat. Oweynagat (Irish: Uaimh na gCat, “cave of the cats”) is a natural limestone cave with Ogham inscriptions cut into the entrance lintel, known in folklore as the “gate to hell” and tied to the Otherworld and the origins of Samhain. It can only be reached on the guided walk, and the interior is sometimes closed off depending on conditions – so treat going right inside as a bonus, not a given. For more on the cave’s folklore and geology, see Cave of the Cats.

Tulsk Abbey

A short walk from the centre brings you to the quiet ruins of Tulsk Abbey, the 15th-century Dominican priory, its surviving walls looking out over farmland – a calmer counterpoint to the drama of the royal mounds.

Practical visitor information

Opening hours and admission

The visitor centre opens 09:00–17:00, Monday to Saturday (last museum admission 16:30); Sunday hours aren’t published, so don’t count on it. Guided site tours run year-round: one a day at 12:00 from September to April, and two, at 12:00 and 14:00, from May to August, with Saturday tours by appointment only. The exhibition tour is €6 for adults; the full site-and-exhibition tour is €20 (children under 10 free on the exhibition tour). Pre-booking is wise for the guided walks and essential for groups; check the official website for the latest times and prices.

Facilities and accessibility

The centre has level access, wheelchair-friendly routes to the key outdoor monuments and accessible toilets. Free car and coach parking is on site, along with secure bicycle racks, a café, a gift shop, baby-changing and free Wi-Fi.

Getting there

Tulsk sits on the N5, the Dublin–Westport road, about 25 km north of Roscommon town. Bus Éireann route 570 links the village with Roscommon; the nearest railway stations are Roscommon, Carrick-on-Shannon and Longford.

Nearby attractions

Book the guided walk before you come, especially near Halloween: this is where Samhain is said to have started, and the October slots go first.

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