Dummy Mine The invention relates to a dummy mine (1) comprising a rigid upper face (2) one form of which corresponds to the form of an upper face of a real mine, characterized in that the dummy mine (1) further comprises: a foldable side wall (3a), integral with the rigid upper face (2); a lower wall (3b), integral with the foldable side wall (3a); and a closable opening (4) leading into a variable-volume
interior space jointly defined by the rigid upper face (2), the foldable side wall (3a), and the lower wall (3b); the variable-volume
interior space being configured to move the dummy mine (1) from a transport position, in which the
interior space has a first volume, to a use position, in which the interior space has a second volume, larger than the first volume, and the dummy mine (1) has the shape of the real mine. Figure to be published: Figure 1