20210802 16430500 1.0 TRUE buried_valley_historic_centerlines Data identifying the current national understanding of the locations (shown as polygons) of buried valleys from BGS maps and memoirs and current borehole dataset. The scale of the data is 1:250 000 scale. Onshore coverage is provided for all of England, Wales, Scotland. It compiles data derived from historical publications and combines it with an expert controlled semi-automated 3D modelling methodology to create our best current assessment of where these features might occur. It is meant to complement the National Superficial Deposit Thickness Model. British Geological Survey