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Dermot and Gránia's Bed is a Neolithic portal tomb and long cairn located near Cookstown, County Tyrone. Built during the Neolithic period, this megalithic monument belongs to a widespread class of collective burial chambers found across Ireland and Britain. The site sits upon bedrock formed from an unnamed igneous intrusion of Silurian age, composed of felsic rock that has weathered to create the underlying geology of this part of County Tyrone.
The monument comprises a stone chamber accessed through a portal entrance, typical of portal tombs constructed between approximately 4000 and 3500 BCE. The long cairn would originally have covered the entire burial chamber, creating a substantial earthen and stone mound aligned roughly east to west. This construction method served both to protect the chamber and to create a visually prominent communal monument in the landscape.
The site is protected by the Historic Environment Division of the Department for Communities under scheduled monument reference 15002. Such monuments are invaluable records of Neolithic settlement patterns, burial practices and social organisation, demonstrating the significance of collective ritual and monument-building in prehistoric Ireland. Dermot and Gránia's Bed remains an important archaeological and cultural landmark, reflecting the deep antiquity of human habitation in the Cookstown area.
Dermot & grania's bed. portal tomb & long cairn is a scheduled monument protected by Department for Communities NI under reference 15002. View the official record →
Dermot and Gránia's Bed is a Neolithic portal tomb and long cairn located near Cookstown, County Tyrone. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 15002.
Dermot & grania's bed. portal tomb & long cairn dates from the neolithic period, and is classified as a megalithic tomb. It is one of over 32,000 scheduled monuments protected across the UK.
Dermot & grania's bed. portal tomb & long cairn 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 15002.
Several scheduled monuments lie within 10 km, including Stone circles (3) & alignment (3 km), Stone circles (2) & double alignment (3.5 km), Standing stone (4.5 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Dermot & grania's bed. portal tomb & long cairn'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.
Dermot & grania's bed. portal tomb & long cairn stands on Unnamed Igneous Intrusion, Ordovician To Silurian, bedrock that formed in the Silurian. The rock here is felsic-rock.