The objective of the geophysical investigation method was the determination of the presence of a concrete covering over an insecticide burial place, the thickness of the cover, and depth of the landslide body. Results of measurements by magnetic survey (MS), electrical sounding (ES), and electrical profiling (mapping) showed an absence of concrete cover but a subsoil layer of loam and clay 2.8–3.0 m thick. The formation of fissures in the cover has helped rainfall to penetrate into the pesticides, turning them into paste and liquid forms. The depth of the burial place changes from 7.8 m to 10.4 m and the base is in the upper layer of landslide cover). The second and older active landslide layer is at a depth of 13–18 m. An unexpected fracture in the burial place, which is on an active landslide, could cause an ecological disaster which could endanger the populations of the Shoraxbyur, Vardashen, and Erebuny suburbs of Yerevan, capital of Armenia.