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Crannog is a submerged or semi-submerged dwelling platform of early Christian date situated in Dungannon, County Tyrone. The monument lies upon bedrock of the Sherwood Sandstone Group, a geological formation of Ladinian age composed of sandstone, siltstone and mudstone that underlies this part of the landscape. Such geological conditions, with water-bearing strata and natural drainage patterns, would have influenced the choice of location for this settlement type.
Crannogs were artificial or partly artificial islands constructed in freshwater lakes and wetlands, serving as defended homesteads for farming families. The early Christian period saw continued use and construction of these structures across Ireland and Ulster, where they offered protection and access to water resources. The shallow waters and boggy terrain surrounding Dungannon would have provided suitable conditions for crannog settlement.
The site is protected under the Historic Environment Division's statutory register as a monument of archaeological significance, recorded under reference number 15870. Though now largely hidden beneath water and accumulated sediment, the crannog at Dungannon represents an important survival of early medieval domestic settlement patterns and engineering in the region.
Crannog is a scheduled monument protected by Department for Communities NI under reference 15870. View the official record →
Crannog is a submerged or semi-submerged dwelling platform of early Christian date situated in Dungannon, County Tyrone. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 15870.
Crannog dates from the e.christ. period, and is classified as a crannog. It is one of over 32,000 scheduled monuments protected across the UK.
Crannog 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 15870.
Several scheduled monuments lie within 10 km, including Architectural fragment (0.9 km), Rath & possible souterrain (3 km), Crannog (3.5 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Crannog'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.
Crannog stands on Sherwood Sandstone Group, bedrock that formed in the Ladinian. The rock here is sandstone, siltstone and mudstone.