Geological Survey of Great Britain. Great Britain. Geological Survey of England and Wales. Sheet 77 drift. Great Britain. Ordnance Survey of England. (Third edition) North Decimal Degree 53.783300. South Decimal Degree 53.6167. East Decimal Degree -1.6167. West Decimal Degree -2.0333. In upper left corner: Ordnance Survey of England (Third Edition). Relief shown by contour interval and spot heights.Transverse Mercator projection. National grid system. "Original geological survey published on Old Series maps in 1870, 1874. Re-surveyed 1923-1925 by D. A. Wray et. al.".