RCAHMW colour oblique aerial photograph of Bryn-Yr-Arian Lead Mine, southeast  of Tre'r-Ddol. Taken on 17 April 2007 by Toby DriverOpsiynau lawrlwytho a prynu
NPRNTeitlMath O SafleArchifauDelweddauNPRN402009TeitlBryn-yr-Arian Lead Mine [Disused], SE of Tre'r-DdolMath O SafleMWYNGLAWDD PLWMArchifau14Delweddau7