Sump diving

Sump diving involves exploring underwater spaces called sumps—secluded, often flooded chambers or passages—typically found within caves or mines. Divers enter these submerged environments to map, inspect, or recover objects, navigating through narrow, confined, and sometimes challenging conditions. It requires specialized training, equipment, and safety precautions due to the potential risks like poor visibility, limited exits, and complex tight spaces. Sump diving helps scientists, explorers, and engineers understand underground structures, discover new passages, and assess safety or environmental conditions in these often remote and hidden areas.