Horizontal Section No. 29 (1853). Untitled [Craig das Eithin, R. Mawddach], Aran Mowddwy, Clun Forest. Geological Survey of GB. 1st
Horizontal Section No.29 (1853). Untitled [Craig das Eithin, R. Mawddach], Aran Mowddwy, Clun Forest. Geological Survey of GB. 1st edition. The description in 1934 catalogue lumps 28, 29, and 30 together; only the places on this section are named in the edited title above. Located on Old Series one-inch maps 60nw &sw, 74sw, 75se, and 78sw &se. Hand coloured engraving 67 x 98.5cm, 1:10,560 scale (6”= 1mile). Flat, linen-taped edge, slightly age-toned, library stamp on back. Bright colours. In very good condition.
About England & Wales Sections
These hand-coloured engraved ‘horizontal’ sections at six inch to one mile scale were published in the mid 19th century by the Geological Survey of England and Wales. The detailed profiles generally follow the geological dip on the one inch Old Series maps numbered in the upper right hand margin and the profile locations are shown on these maps which themselves did not include a section.