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Bivallate Rath is an early Christian fortified settlement near Lisburn, Northern Ireland. The monument comprises a residential enclosure defined by two concentric circular earthwork banks and external ditches, a defensive arrangement typical of such high-status farmsteads occupied between the fifth and twelfth centuries. The rath occupies bedrock composed of Palaeogene extrusive rocks, a mafic lava and tuff formation that would have offered relatively stable ground for construction, though the volcanic geology presents challenges for traditional post-hole archaeology.
The two vallums distinguishing this site suggest its occupant possessed significant social standing within early medieval Irish society. Such bivallate raths were rarer than single-banked examples, indicating wealth sufficient to undertake more ambitious earthwork defences. The double defensive circuit would have provided both practical protection for livestock and family dwellings, and visible expression of territorial authority across the surrounding landscape.
The monument is protected under Historic Environment Division reference 4869. Modern survey and excavation techniques may yet reveal artefacts and structural evidence sealed within the earthworks, contributing to understanding of early Christian settlement patterns and land-use in this region of Ulster during the early medieval period.
Bivallate rath is a scheduled monument protected by Department for Communities NI under reference 4869. View the official record →
Bivallate Rath is an early Christian fortified settlement near Lisburn, Northern Ireland. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 4869.
Bivallate 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.
Bivallate 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 4869.
Several scheduled monuments lie within 10 km, including Spence's fort. rath (2.4 km), Lagan canal. lagan canal (3 km), Achcli. medieval church (in ruins) & graveyard with bullaun & ?holy well (3.6 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Bivallate 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.
Bivallate rath stands on Unnamed Extrusive Rocks, Palaeogene, bedrock that formed in the Paleogene. The rock here is mafic lava and mafic tuff.