Situated immediately behind Frongoch farmhouse (NPRN 405543), are a series of 14 root vegetable stores, situated at the base of the hill slope. They cover an area 59m long and take the form of narrow rectangular trenches on average 4.7m long by 1.6m wide. Some of the stores cut into each other, indicating they have been cut over more than one period; but on the whole they are laid out in a relatively organised fashion. Similar stores have been located elsewhere in the area (NPRNs 405551, 405552, 405554, 405555).

These stores were surveyed by RCAHMW in 2006 as part of a wider study of the Troed y Rhiw area (NPRN 405578).

Louise Barker, RCAHMW, March 2007.