Seismic surveys are techniques used to explore the Earth's subsurface by sending sound waves into the ground. These waves bounce back when they hit different layers of rock or soil, and the data collected helps scientists and engineers understand what lies beneath the surface. This information is crucial for various applications, including oil and gas exploration, mineral exploration, and geological studies. The process typically involves using a vibrator truck or explosives to generate the sound waves. Sensors called geophones then detect the returning waves, which are analyzed to create detailed images of the underground structures. This method is non-invasive and provides valuable insights without the need for extensive drilling.