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Doherty Tower, Castle Aileach is a medieval and late medieval fortification comprising a stone tower and earthwork enclosure situated in County Derry, Northern Ireland. The structure occupies a commanding position on bedrock of the Southern Highland Group, formed during the Middle Cambrian period and composed of psammite and pelite, providing a stable foundation for construction. The tower and its associated earthwork defences reflect the military architecture of the later medieval period, when such structures served as strongholds for regional powers controlling the surrounding landscape.
The monument's combination of stone tower and encircling earthwork exemplifies a common defensive strategy of medieval Ulster, where isolated strongpoints could control movement and resources across the terrain. The psammitic bedrock, being relatively resistant to erosion, would have supported both quarrying for building stone and the durability of the fortifications themselves.
The site is protected by the Historic Environment Division under reference 13242, recognising its significance as evidence of medieval settlement and territorial control in the region. The earthwork enclosure remains visible in the landscape, preserving the spatial relationship between the tower and its outer defences, which illuminates the practical and symbolic ordering of medieval fortified sites in this part of Ulster.
Doherty tower, castle aileach. castle & earthwork enclosure is a scheduled monument protected by Department for Communities NI under reference 13242. View the official record →
Doherty Tower, Castle Aileach is a medieval and late medieval fortification comprising a stone tower and earthwork enclosure situated in County Derry, Northern Ireland. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 13242.
Doherty tower, castle aileach. castle & earthwork enclosure dates from the med/l.med period, and is classified as a fortification. It is one of over 32,000 scheduled monuments protected across the UK.
Doherty tower, castle aileach. castle & earthwork enclosure 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 13242.
Several scheduled monuments lie within 10 km, including St. columb's stone. inauguration stone (3.3 km), Heavy anti-aircraft battery (3.5 km), St brecan's chapel, st columb's chapel, domnach min-cluane. chapel & graveyard on earlier site (5 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Doherty tower, castle aileach. castle & earthwork enclosure'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.
Doherty tower, castle aileach. castle & earthwork enclosure stands on Southern Highland Group, bedrock that formed in the Middle Cambrian. The rock here is psammite and pelite.