Horizontal Section No. 32 (1854). Untitled. Moel-y-Gwrnedd, Bala LakePen-y-Dall-Gwm, Hirnant, Pen-y-Brwynen, Pen-y-Bylchau, Galt-yr-Aner. Geological Survey of GB. 1stHorizontal Section No. 32 (1854). Untitled. Moel y Gwrnedd, Bala LakePen y Dall Gwm, Hirnant, Pen y Brwynen, Pen y Bylchau, Galt yr Aner. Geological Survey of GB. 1st edition. Places in title taken from figure. They do not match the 1934 catalogue description based on the 2nd edition. Located on Old Series one inchmaps 60nw & ne, 74nw & sw. Hand coloured engraving 67. 5 x 100cm, 1: 10,560 scale (6= 1mile). Flat, linen taped edge, slightly age toned,