Auger drilling is a method used to bore holes into the ground using a helical screw, known as an auger. This tool is rotated to excavate soil, rock, or other materials, making it effective for various applications, including geotechnical investigations and environmental sampling. The process involves inserting the auger into the ground and turning it to bring material to the surface. Auger drilling is often preferred for its efficiency and ability to reach depths of up to several hundred feet, depending on the type of auger used and the soil conditions encountered.