Geophysical survey is a scientific method used to image and study the physical properties of the Earth's subsurface by measuring variations in gravity, magnetism, electrical conductivity, and seismic waves. These surveys are conducted using specialized equipment and techniques such as ground-penetrating radar, magnetometers, resistivity meters, and seismographs. Geophysical surveys play a crucial role in a wide range of fields including archaeology, environmental studies, natural resource exploration, and civil engineering. By providing valuable insights into the subsurface characteristics of an area, geophysical surveys help researchers and professionals make informed decisions about potential risks and opportunities that may exist underground.