A subterranean laboratory is a research facility located underground, often designed to minimize interference from external factors such as radiation, noise, and temperature fluctuations. These labs are commonly used for scientific experiments that require controlled environments, such as those in fields like physics, geology, and biology. Many subterranean laboratories are situated in former mines or natural caves, providing a stable environment for sensitive equipment. Notable examples include the Gran Sasso National Laboratory in Italy and the Soudan Underground Laboratory in the United States, which host experiments related to particle physics and neutrino research.