sentences:  The problem that had to be dealt with according to the trees on the top, was to find out where their roots were directed, without provoking the religious feeling of the church people and the clergymen that were our "sleepless guardians" throughout the entire survey.After an onsite estimation of the situation it was decided that the high-frequency georadar would be used on the walls of the building together with electrical tomography with very small electrodes, so as to have a double check on the methodology.The results of the investigation threw ample light to the mystery and gave the Direction of Restoration of Byzantine and After Byzantine Monuments all the answers they needed to proceed safely to the restoration of the Church of Saint Theodora.