A hole marked as 'shaft' on the 1:10,000 scale O.S. map. Notable now as a fenced enclosure within which is an apparently deep hole. On inspection this proved to be a rubbish filled shaft about 1.5m diameter at the top but widening towards the bottom, giving a 'bell' like profile in section. Depth approximately 10m but presumed to have been much deeper and connecting perhaps with an adit. An iron bar was noted, wedged across the top of the shaft. This had at one end the centre of a wheel hub. It could perhaps be the remains of winching machinery on site. Equally it could have been brought in from elsewhere to serve a a crude hoist support. Some association with copper mining is assumed and perhaps the third shaft referred to in Greenly,846., (Greenly, Edward, 1919. Memoirs of the Geological Survey, 'The Geology of Anglesey' Vol II., Southampton). 20m above O.D.
