Underground laboratories are research facilities located below the Earth's surface, often designed to minimize interference from external factors like radiation and noise. These labs are commonly used for scientific experiments in fields such as particle physics, geology, and environmental science. The depth helps create a controlled environment, allowing researchers to conduct sensitive experiments. Many underground laboratories are situated in former mines or natural caverns, providing a stable and secure setting. Notable examples include the Gran Sasso National Laboratory in Italy and the Soudan Underground Laboratory in the United States. These facilities play a crucial role in advancing our understanding of fundamental scientific questions.