Known as Mín na Saileach 15, this feature sits on flat ground just five metres south of a meandering stream. Measuring 3.4 metres by 2.5 metres and reaching a depth of 0.6 metres, the cut runs east to west and displays a level of precision that suggests more than simple peat extraction.

Dr Eugene Costello, who documented the site in 2016 and 2020, notes that whilst this could be the remnant of trial cutting for peat, several factors hint at a more intriguing purpose. The careful execution of the cut, combined with what appear to be entrance features, suggests this may have been a sunken hut; a type of semi-subterranean dwelling that would have provided shelter from the harsh Atlantic weather. These structures, carved directly into the earth, were once common in Ireland's rural landscapes, offering warmth and protection by using the surrounding peat as natural insulation.

The surrounding landscape provides additional clues about past human activity here. Directly across the stream, a notably green patch of vegetation stands out against the typical bog flora, possibly enriched by centuries-old manuring practices. Just north of this verdant area, the faint traces of what may be cultivation ridges can still be detected, suggesting this wasn't just a dwelling but part of a working agricultural landscape where people once carved out a living from these challenging wetlands.