c. 1930s
Today
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Left and right are showing the same time slice. Pick two different acquisitions to compare.
Left: surface reconstructed from digitised 1929-39 WIG survey contours, before sand mining began. Right: current digital terrain model derived from Geoportal 1-metre LiDAR data. Same site, same colour ramp, pick any two of the three acquisitions to compare.
Drag the divider, or tap anywhere on the image, to compare. Use the dropdowns above to choose which two time slices to compare.