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Lettergash fort is a counterscarp rath situated near Omagh in County Tyrone, Northern Ireland. This earthwork monument dates to the early medieval period and belongs to a distinctive class of ringforts characterised by an outer bank positioned beyond the main defensive ditch, a design that amplified the apparent scale of the fortification. The monument sits upon bedrock of the Shanmullagh Formation, comprising sandstone, mudstone, siltstone and conglomerate deposits laid down during the Famennian period of the Carboniferous era. These varied geological substrates would have presented both challenges and resources to the fort's original constructors, who would have exploited natural outcrops and excavated materials to build the earthwork banks that defined their settlement.
The rath represents a significant phase of settlement activity in early medieval Ulster, reflecting patterns of land ownership, social organisation and defensive requirements during the centuries following Roman withdrawal from Britain. Such ringforts served as residences for farming families and their dependants, with the enclosing banks providing both practical defence against livestock raids and visible markers of status and territorial claim.
The site is protected under the Historic Environment Division's statutory designation scheme, reference number 15390, ensuring preservation of this important record of early medieval settlement and land use in the Omagh district.
Lettergash fort. counterscarp rath is a scheduled monument protected by Department for Communities NI under reference 15390. View the official record →
Lettergash fort is a counterscarp rath situated near Omagh in County Tyrone, Northern Ireland. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 15390.
Lettergash fort. counterscarp rath dates from the e.christ. period, and is classified as a rath. It is one of over 32,000 scheduled monuments protected across the UK.
Lettergash fort. counterscarp rath 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 15390.
Several scheduled monuments lie within 10 km, including Giant's grave, chambered grave. court tomb (2.6 km), Bivallate rath (3.5 km), Giant's grave. wedge tomb (3.7 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Lettergash fort. counterscarp rath'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.
Lettergash fort. counterscarp rath stands on Shanmullagh Formation, bedrock that formed in the Famennian. The rock here is sandstone, mudstone, siltstone and conglomerate.