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Clagan stone is a prehistoric standing stone monument comprising three stones, possibly the surviving remains of a megalithic tomb. Located in County Derry, Northern Ireland, the monument stands on bedrock of the Argyll Group, a sequence of metamorphic rocks formed during the Neoproterozoic period, consisting of psammite, semipelite and pelite. This ancient geology provided the raw material from which the standing stones were extracted and raised, anchoring the monument deep within the landscape's geological history.
The three upright stones suggest this was originally a more substantial structure, likely a chambered tomb or similar ritual monument characteristic of the Neolithic period. Such megalithic tombs served both practical and ceremonial purposes, functioning as communal burial places and focal points for early farming communities. The partial survival of Clagan stone preserves an important record of prehistoric monument-building practices in the north of Ireland.
The site is protected by the Historic Environment Division under reference 12543, securing its preservation for future study and public understanding. Standing stones and tomb remains such as this provide invaluable evidence of early settlement patterns, social organisation and ceremonial life in prehistoric Ulster. The monument contributes significantly to the archaeological heritage of the Derry landscape and the broader Neolithic record of Ireland.
Clagan stone. standing stones (3) possibly remains of megalithic tomb is a scheduled monument protected by Department for Communities NI under reference 12543. View the official record →
Clagan stone is a prehistoric standing stone monument comprising three stones, possibly the surviving remains of a megalithic tomb. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 12543.
Clagan stone. standing stones (3) possibly remains of megalithic tomb dates from the prehistoric period, and is classified as a standing stone. It is one of over 32,000 scheduled monuments protected across the UK.
Clagan stone. standing stones (3) possibly remains of megalithic tomb 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 12543.
Several scheduled monuments lie within 10 km, including Standing stone (2 km), Rath (2.2 km), Rath (2.7 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Clagan stone. standing stones (3) possibly remains of megalithic tomb'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.
Clagan stone. standing stones (3) possibly remains of megalithic tomb stands on Argyll Group, bedrock that formed in the Neoproterozoic. The rock here is psammite, semipelite and pelite.