An Underground Research Facility is a specialized laboratory or center located below the Earth's surface, designed for scientific research and experimentation. These facilities often provide a controlled environment that minimizes external interference, such as cosmic radiation and weather variations, making them ideal for sensitive experiments in fields like physics, biology, and geology. Many underground research facilities are built in former mines or natural caverns, allowing scientists to conduct studies that require isolation from the surface environment. Notable examples include the Large Hadron Collider in Switzerland and the SNO+ experiment in Canada, which focus on particle physics and neutrino research, respectively.