This image was provided by Kamil Rozimant.
During the renewing of drainage system under the road were measured two geophysical methods in order to bring information about the state of the roadway. It was made resistivity imaging (ERT), gravity line survey and leveling above an old tube. The part of road already was undermined. We can see the position and correlation of underground weakened zones from used prospecting.
Realisation: M.Gajdoš, V.Gajdoš, T.Grand and K.Rozimant, DAEG FNS, Comenius University - email@example.com