Geotechnical engineering relies heavily on obtaining accurate and comprehensive subsurface data. The quality of subsurface data plays a crucial role in determining the stability and safety of any construction project. Without reliable data on soil and rock properties, groundwater conditions, and other geologic features, it is impossible to accurately assess the potential risks and design parameters for foundations. The information collected from a thorough subsurface investigation is used to evaluate the feasibility of construction projects, identify potential hazards, and determine the most appropriate construction techniques.