Horizontal Section No. 107 (1875). From Portskewet in Monmouthshire across the Severn at New Passage by Stoke Gifford in Gloucestershire, across Bristol Coalfield to Wapley. Geological Survey of GB. 1stHorizontal Section No. 107 (1875). From Portskewet in Monmouthshire across the Severn at New Passage by Stoke Gifford in Gloucestershire, thence across the Bristol Coalfield to Wapley. Geological Survey of GB. 1st edition. Located on Old Series one inch map 35. Hand coloured engraving, 69 x 101cm, 1: 10,560 scale (6= 1mile). Flat, linen backed, age toned, soiled, pinholes in corners. In good condition.