Natural radioactivity is widespread in the earth and is present in different environment geological formations in the soil and rocks. Natural radionuclides in soil originate from the members of U-238 and Th-232 series, and K-40 radionuclide is the main external source of radiation to the human body. In this study, concentrations of the natural radioactivity Ra-226, Th-232, and K-40 are measured in soil samples collected along the Ganos fault. The radioactivity levels of the soil samples for the study are determined by scintillation gamma spectroscopy. Concentrations of Ra-226 in the soil samples ranged from ND to 24.1 Bq kg(-1), Th-232 concentrations from ND to 40.2 Bq kg(-1), and K-40 concentrations from 315.9 to 748.9 Bq kg(-1). Obtained results were compared with the literature data.