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Sweat house near Coleraine is a small stone structure of uncertain archaeological status, located on bedrock of Palaeogene extrusive rocks in the Coleraine area of County Londonderry. The monument lies on mafic lava and tuff formations dating from around 60 to 56 million years ago, part of the extensive volcanic deposits that characterise this region of Northern Ireland. The underlying geology has shaped both the landscape and the availability of stone for local building throughout history.
Sweat houses are structures traditionally associated with therapeutic bathing practices, though their precise original function and dating remain subjects of scholarly debate. Built from locally available stone, such buildings were typically small, semi-subterranean or earth-covered chambers designed to retain heat. The classification of this particular example as "uncertain" reflects the difficulty archaeologists sometimes face in distinguishing genuine sweat houses from other small stone structures such as saunas, storage facilities or domestic buildings.
The monument is protected by the Historic Environment Division of the Department for Communities under record number 11786, ensuring its preservation as part of Northern Ireland's archaeological heritage. The site's survival contributes to our understanding of pre-industrial structures and practices in the locality, even where definitive interpretation remains elusive.
Sweat house is a scheduled monument protected by Department for Communities NI under reference 11786. View the official record →
Sweat house near Coleraine is a small stone structure of uncertain archaeological status, located on bedrock of Palaeogene extrusive rocks in the Coleraine area of County Londonderry. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 11786.
Sweat house dates from the uncertain period, and is classified as a sweat house. It is one of over 32,000 scheduled monuments protected across the UK.
Sweat house 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 11786.
Several scheduled monuments lie within 10 km, including Counterscarp rath (1.9 km), Sweat house (2.6 km), Nicholl's ground. graveyard & souterrain (2.6 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Sweat house'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.
Sweat house stands on Unnamed Extrusive Rocks, Palaeogene, bedrock that formed in the Paleogene. The rock here is mafic lava and mafic tuff.