Geotechnical drilling is a process used to explore and analyze the physical properties of soil and rock beneath the Earth's surface. This technique involves drilling boreholes to collect samples, which are then tested to determine their composition, strength, and stability. The information gathered helps engineers and geologists assess the suitability of a site for construction projects, such as buildings, bridges, and roads. The data obtained from geotechnical drilling is crucial for understanding ground conditions and potential challenges. It aids in designing foundations and other structures, ensuring safety and durability. This process is an essential part of civil engineering and environmental studies.