A borehole is a narrow, deep hole drilled into the ground to access underground resources such as water, oil, or minerals. These holes can vary in depth and diameter, depending on their purpose. Boreholes are commonly used in geology and hydrology to study the Earth's subsurface and to extract natural resources. Boreholes are created using specialized drilling equipment that can penetrate various types of soil and rock. Once a borehole is established, it can be equipped with pumps or monitoring devices to manage and assess the resources accessed. They play a crucial role in environmental studies and resource management.