Donaghmore Souterrain is a

souterrain ''Souterrain'' (from French ''sous terrain'', meaning "under ground") is a name given by archaeologists to a type of underground structure associated mainly with the European Atlantic Iron Age. These structures appear to have been brought northw ...

and

National Monument A national monument is a monument constructed in order to commemorate something of importance to national heritage, such as a country's founding, independence, war, or the life and death of a historical figure. The term may also refer to a spec ...

located in

County Louth County Louth ( ; ga, An Lú) is a coastal county in the Eastern and Midland Region of Ireland, within the province of Leinster. Louth is bordered by the counties of Meath to the south, Monaghan to the west, Armagh to the north and Down to the ...

Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...

Location

Donaghmore Souterrain is located west of

Dundalk Dundalk ( ; ga, Dún Dealgan ), meaning "the fort of Dealgan", is the county town (the administrative centre) of County Louth, Ireland. The town is on the Castletown River, which flows into Dundalk Bay on the east coast of Ireland. It is h ...

, near a cluster of houses. Donaghmore Souterrain is found in a village named Kilkerley (translates to rulya fein).

History

Souterrains are cave-like structures built as places of refuge and storage, and in Ireland they date between the 8th and 12th centuries. The souterrain was discovered in 1960 during the construction of a

Louth County Council Louth County Council ( ga, Comhairle Contae Lú) is the authority responsible for local government in County Louth, Ireland. As a county council, it is governed by the Local Government Act 2001. The council is responsible for housing and com ...

cottage. It was excavated by Etienne Rynne who found trenches, a pit, two post-holes.

sherds This page is a glossary of archaeology, the study of the human past from material remains. A B C D E F ...

of souterrain ware, a

bronze Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals, such as phosphorus, or metalloids such ...

pin, a whetstone and iron

slag Slag is a by-product of smelting (pyrometallurgical) ores and used metals. Broadly, it can be classified as ferrous (by-products of processing iron and steel), ferroalloy (by-product of ferroalloy production) or non-ferrous/base metals (by-prod ...

Description

The souterrain at Donaghmore is a complex of tunnels lined with

dry stone Dry stone, sometimes called drystack or, in Scotland, drystane, is a building method by which structures are constructed from stones without any mortar to bind them together. Dry stone structures are stable because of their construction m ...

walls, floors and ceilings, with

corbel In architecture, a corbel is a structural piece of stone, wood or metal jutting from a wall to carry a superincumbent weight, a type of bracket. A corbel is a solid piece of material in the wall, whereas a console is a piece applied to the s ...

s and

lintel A lintel or lintol is a type of beam (a horizontal structural element) that spans openings such as portals, doors, windows and fireplaces. It can be a decorative architectural element, or a combined ornamented structural item. In the case of w ...

s. The ceilings are over in height and the total length of tunnel is . It is largely dug into

boulder clay Boulder clay is an unsorted agglomeration of clastic sediment that is unstratified and structureless and contains gravel of various sizes, shapes, and compositions distributed at random in a fine-grained matrix. The fine-grained matrix consists ...

but also into

Silurian The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozo ...

grit.

References

{{reflist Archaeological sites in County Louth National Monuments in County Louth