A ditchless grass covered bowl barrow with a diameter of 16.0 metres and an average height of 1.1 metres. No stones are visible and there is no visible trace of any other barrow in the vicinity.


The Folk Life Survey recorded a large tumulus on Ballagilbert in the field known locally as Magher ny Grongan. Mr Taggart, the tenant in 1918, said there had been others 'of earth with graves at the bottom' and that this remaining one had 'a circle of large stone round it'.  


Mr Connal, a later tenant, had always known this field as Magher ny Grongan and there is a local tradition that the dead from a nearby battle were buried here.  


Many years ago archaeologists began an excavation of the mound but were stopped before they completed the work by Mr Taggart who blamed the activity for the mysterious death of some of his cattle.