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St Lasser's Cell Souterrain is an early Christian underground stone-built structure located in County Fermanagh, Northern Ireland. Souterrains are characteristic features of Iron Age and early medieval settlements across Ireland and Britain, comprising chambered passages constructed beneath ground level. This example sits upon bedrock of the Tyrone Group, a Visean-age formation comprising limestone, mudstone, sandstone and siltstone interspersed with chert, coal and conglomerate, geology that would have shaped both the construction method and the chamber's preservation.
The monument is protected by the Historic Environment Division under reference 10568. Early Christian souterrains such as this often served multiple functions within monastic or settlement contexts, potentially providing secure storage, refuge or ritual space. The Fermanagh landscape, with its drumlin terrain and water systems, supported numerous early Christian communities from the fifth century onwards, and this souterrain represents evidence of that distinctive period of settlement and spiritual activity.
St. lasser's cell. souterrain is a scheduled monument protected by Department for Communities NI under reference 10568. View the official record →
St Lasser's Cell Souterrain is an early Christian underground stone-built structure located in County Fermanagh, Northern Ireland. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 10568.
St. lasser's cell. 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.
St. lasser's cell. 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 10568.
Several scheduled monuments lie within 10 km, including Platform rath (1.5 km), Cashel (1.8 km), Sub-rectangular enclosure (2.1 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of St. lasser's cell. 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.
St. lasser's cell. souterrain stands on Tyrone Group, bedrock that formed in the Visean. The rock here is limestone, mudstone, sandstone and siltstone, with subordinate chert, coal and conglomerate.