The map (presented in two versions) shows the location of some geognostic test holes made in the lagoon of Venice, highlighted through red points. It's an exemplifying extrapolation, in .pdf format, based on elaborations performed by C.V.N. .
Each test hole has been catalogued with the attribution of a serial number, the indication of its coordinates and some other characteristics. These data are available in the C.V.N. .

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