Along the line of profile 1 at the 49th meter, at a depth of 0.5-0.8 m, a local intense reflection from a contrasting object was revealed. The dimensions of the object in the projection along the profile line do not exceed 1 meter.
It can be assumed that the anomaly arose quite a long time ago (the section shows that there are no ground changes above the anomaly) and belongs to the middle or early XX century.