Metro in Kazan Binary frame obtained with the passage next to the industrial foundation area.

Red color flooded the sections of the rarefied soil because of action by subsurface waters. Colored lines mark the boundaries of geological layers. At the depth of ~7m (depth is defined according to the hyperbola) the objects are detected which were initially identified as clay outliers. But this assumption does not correspond the objects diameter of ~30sm found by procedure "hyperbola". Possibly these objects are the remainders of ancient piles. On horizontal marks 28-48m at the depth of ~3m the remainders of the foundations of old buildings (dual red line) were discovered.