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Title
Vintage map of The Netherlands Showing Depressions 1900s #176735318
Description
The Harmsworth Encyclopaedia 1930s / 1940s - Social history. Vintage map of The Netherlands Showing Depressions 1900s. A depression is a low point in the ground or a sinkhole. It could be described as an area of low ground surrounded by higher ground in all directions, or simply a hole in the ground. Usually only depressions that are equal to or greater than the contour interval will be shown.