Megalithic tomb, Clonmany Glebe, Co. Donegal
In the townland of Clonmany Glebe on County Donegal's Inishowen peninsula, scattered stones mark the site of what was once a megalithic chamber known as Cloghtogle.
Megalithic tomb, Clonmany Glebe, Co. Donegal
The monument stood on a gentle ridge between the Clonmany and Ballyhallan rivers, about 3.5 kilometres southeast of Tullagh Bay. Today, only outcropping rock and stone fragments remain; many appearing to have been deliberately broken apart, with no clear trace of the original structure that once commanded this spot.
When Ordnance Survey mapmakers visited in 1848, they found something far more substantial. According to their detailed notes, the monument consisted of flag stones set upright on their edges, supporting a massive capstone that measured roughly 1.8 metres long and 0.9 metres wide. An upright stone marked the western end of the structure, with all the stones ranging from 0.9 to 1.8 metres in length. The surveyors compared it to other megalithic tombs they called “Labby Dermot and Grania”, suggesting it shared characteristics with known passage tombs or dolmens in the area.
Whatever form this ancient burial chamber took, it didn’t survive the 19th century intact. By the time Ordnance Survey teams returned in 1900, they found only “a clump of cropping rock” where the megalith once stood. The exact nature of Cloghtogle remains a mystery; whether it was a portal tomb, court tomb, or another type of megalithic structure is impossible to determine from the fragmentary evidence. Its destruction sometime between 1848 and 1900 means this piece of Ireland’s Neolithic heritage survives only in the careful observations of Victorian surveyors and the broken stones that still litter the ridge.





