Historic Fenlands Mashup
Here is a mashup on giscloud.com of the geographic history of land cover and surface geology of East Anglia since Domesday based on: * selected land cover from H.C. Darby's publications on the Middle Ages and later * administrative and geographic boundaries from UK Ordnance Survey OpenData * surficial and offshore geology from British Geological Survey web mapping services * and global coastline for a lightweight frame of reference from US NGDC GSHHS Dataset Name: Historic Fenlands Mashup Dataset URL: http://blog.zolnai.ca/2010/05/historic-fenlands-mashups.html Dataset Provider: OS OpenData, HC Darby, BGS WMS
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http://blog.zolnai.ca/2011/12/on-line-spatial-data-validation-part-ii.html