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Kilcrue souterrain is an early Christian underground stone-built structure located in the Moyle area of Northern Ireland. Souterrains are passages and chambers constructed beneath or into the ground, typically dug into bedrock or built with stone walls and roofed with slabs or corbelling. This example sits upon Palaeogene extrusive rocks—ancient mafic lavas and tuffs formed during the Paleogene period—which would have provided both a practical building material and challenges for the original builders working with the local geology.
The monument dates to the early Christian period, when such structures served various purposes in settlement sites across Ireland and Britain. Whether used for storage, refuge, or ritual purposes, souterrains represent a sophisticated understanding of underground construction. The Kilcrue example contributes to the broader archaeological record of early Christian settlement patterns in the north of Ireland.
The site is protected as a scheduled monument under the Historic Environment Division, reference 614, reflecting its significance as evidence of early medieval occupation and construction techniques in the region. The volcanic geology beneath Kilcrue is characteristic of the Antrim plateau landscape, formed millions of years before the structure itself was built.
Kilcrue. souterrain is a scheduled monument protected by Department for Communities NI under reference 614. View the official record →
Kilcrue souterrain is an early Christian underground stone-built structure located in the Moyle area of Northern Ireland. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 614.
Kilcrue. souterrain dates from the e.christ. period, and is classified as a souterrain. It is one of over 32,000 scheduled monuments protected across the UK.
Kilcrue. souterrain is a Scheduled Ancient Monument, legally protected by DfC Northern Ireland (NISMR) — the body responsible for designating and safeguarding heritage sites in Ni. The official designation reference is 614.
Several scheduled monuments lie within 10 km, including Standing stone (2.4 km), Cashel with souterrain (3 km), Carn an truagh, knocklayd. megalithic tomb, possibly passage tomb (3.5 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Kilcrue. souterrain's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Kilcrue. souterrain stands on Unnamed Extrusive Rocks, Palaeogene, bedrock that formed in the Paleogene. The rock here is mafic lava and mafic tuff.