Measuring just over a metre in height and oriented along a north-south axis, this ancient monolith stands 1.04 metres tall, with a narrow width of 17 centimetres and a thickness of 13 centimetres. The stone occupies what local surveyors have described as good quality land, positioned on a gentle slope that rises towards the east.

This particular standing stone forms part of Donegal's rich archaeological landscape, which spans from the Mesolithic period through to the 17th century. While its exact age and purpose remain uncertain, as is often the case with such monuments, standing stones like this one are typically dated to the Bronze Age, roughly 2500 to 500 BCE. They may have served various functions; marking territorial boundaries, commemorating significant events, or playing a role in prehistoric astronomical observations and ritual practices.

The stone was documented as part of the comprehensive Archaeological Survey of County Donegal, compiled by Brian Lacey and his team in 1983. This survey catalogued the county's field antiquities, creating an invaluable record of monuments that might otherwise be overlooked or forgotten. The Sesnacully standing stone, though modest in size compared to some of Ireland's more famous megalithic monuments, represents an important piece of the archaeological puzzle that helps us understand how prehistoric communities shaped and understood their landscape.