The Identification of fractures and cavities in civil construction is important in many ways. Among the various methods available to detect them, the resistivity method has been considered in the middle of the geophysical methods due to the good correlation between the electrical resistivity and the geological structure. The study area is located 5 km west of Garmsar. Depending on the conditions of the area, 10 profiles were designed with the Wenner array in the north-south direction. The length of the profiles is approximately 110 meters and the profiles are 10 meters away from each other. The purpose of this study was to determine fractures and possible faults, to determine possible cavities and to discriminate layers based on electrical resistivity up to 15 m depth. After inverting the data and interpreting the sections, conditions of the study area was explored.