Looking west to the magical mountain of Knocknarea from Circle 7, the most complete monument remaining at Carrowmore.


The megaliths of Carrowmore, located just southwest of Sligo town, are at the heart of the Coolrea peninsula and are one of the greatest megalithic complexes of ancient Ireland. In this region you can visit the one of the great heartlands of megalithic culture in Western Europe.

Carrowmore is located at the heart of the peninsula, which is in the heart of a well-preserved megalithic landscape. The peninsula is bounded by water on three sides - Ballisodare Bay to the south, the Atlantic ocean to the west and Sligo Bay to the north. The stunning cairn topped mountain of Knocknarea is 6 km to the west, while the smaller, but equally important Cairns Hill is 6 km to the east. There are 6 more mountain-top cairns on the peaks of the Ox Mountains to the south.

Twenty seven monuments remain today, in varying states of preservation. The remains of at least 65 monuments are known, though it was thought by earlier researchers that there may have been up to 100 monuments at Carrowmore. The sites were extensively damaged in the early years of the nineteenth century by land clearance and quarrying.

Circles 56 and 57 and a number of Carrowmore circles were illustrated by William Wakeman around 1878. Image copyright Sligo County Library.

The site is managed by the Office of Public Works, and there is a small visitor centre and information display which is open from Easter to the end of October, with a cover charge. Guided tours are provided. Carrowmore is well signposted from Sligo Town and is easy to find. Details of opening hours and fees can be found here.

This website provides a virtual tour of the sites at Carrowmore, with a page for each monument and as much information as I could find about them. As many of the monuments have been destroyed, the only records of some circles are the comments by Petrie and Wood-Martin and the illustrations of William Wakeman.

This website is laid out like a book, so you can browse page by page by clicking the Next link at the bottom of each page. The next few pages deal with the monuments, history, researchers, destruction and excavations at Carrowmore, followed by seperate pages for each site.

Clickable Map
Borlase's Introduction

Queen Maeve's Cairn

The Glen

Shee Lugh

Sliabh Dá Eán

Cairns Hill


Doonaveeragh Village

Caves of Kesh
Cairns Hill




Kilclooney More


The restored cairn, Carrowmore 51, with, going clockwise, circles 55, 56, 17, 18 (on either side of farmhouse, top right) the largest circle, 22, 26, with Circle 27 at the bottom right, and lastly a ring barrow. Photo from Bing Maps, links to circles added.

The Monuments

The type of monuments found at Carrowmore are called boulder circles, though several have central dolmens or rudimentary passages. They are considered to be an early type of chambered cairn, or passage grave, though in fact, they may be the ancestor of a few monument types.

An old photo of the dolmen Site 13 at Carrowmore, probably around 1900.

The stones used to construct the monuments are a very hard form of local stone called gneiss, which comes from the nearby Ox Mountains. There are an average of 30 - 35 stones per circle, set side by side. Some of the stones are placed on a stone packing, which kept the tops of the stones level. The average circle diameter is 10 - 12 meters, though a few, such as 19, 22, 27 and 51 are larger.

Carrowmore 7 is the most intact example remaining today. It consists of a circle of boulders about 11 meters in diameter, and has a beautifully graceful dolmen, or stone table at the centre. The sockets of missing stones were found during the excavations, which show that there was once a short passage leading into the chamber. About 14 of the circles have passages at Carrowmore.

Circle 27 under excavation by the Swedish team. Photomontage.

Some of the larger boulders were split in half, a feature that can be seen in the chamber of site 27. The rock is rich with veins of quartz, and was brought to the site not by hand, but by retreating glaciers during the ice age. Several fields of gneiss boulders lying as they were dropped by the galciers can be seen from the path up Knocknarea on the left (west) side, and gives an impression of what Carrowmore looked like before the circles were built.

The Coolrea peninsula where Carrowmore is located is limestone covered with a mantle of glacial gravel. The complex is located on a plateau at the centre of the peninsula, with the circles built around the edge. Some limestone slabs were used in the monuments, but not many compared to the gneiss boulders. A good example if the massive capstone on the chamber at site 51, which is thought to have been quarried at the Glen on the south slope of Knocknarea. Some loose limestone slabs may have been used as roofing for the passages (again there is a good example at site 27).

Fragments of quartz were found in some of the circles, and these would have come from the Ox Mountains to the south, specifically from the area around Croughan. One small piece of rock crystal had a hole drilled through the end and was used as a pendant or pendelum.

There is no evidence of cairns or mounds covering the chambers of the Carrowmore monuments, which appear to have been freestanding, as some are today. Several of the sites, however have a raised platform which can be up to a meter above ground level.

The large restored kerbed cairn, Carrowmore 51, with Queen Maeve's cairn on the summit of Knocknarea beyond.