In this paper, we show first results of seismic and EMI data comprising evidence of a siege tunnel mentioned in medieval written sources. The tunnel would be the oldest archaeological evidence of a man-made tunnel in Westphalia (Germany).

In this paper, we present, for the first time, a world war two warship imaged underground, in a silted up harbor. Only reflection seismic measurements and electrical resistivity tomography allowed prospecting of the target at challenging depths from 4 m to 12 m below surface.

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