This site is now engulfed in forestry with only the ruins of one small building. But the 1st edition of the historic 25-inch O. S. map of 1889 depicts a group of buildings called Y Rholdy as an active woollen mill. It was situated on the bank of a small stream draining an area of sand dunes into Malltraeth Bay which, at the site of Y Rholdy, formed a small pond. Another group of small buildings 100 metres to the north-west is named as a pandy, a fulling mill. The 2nd edition map, published in 1900, names Y Rholdy but omits the "woollen" description, but the pandy is still named, and the name "Pandy" survives on modern maps, the only evidence remaining of this former industrial site.

W J Crompton, RCAHMW, 10 May 2018.