National Speleological Society (NSS)

The National Speleological Society (NSS) is a nonprofit organization dedicated to the exploration, study, and conservation of caves and karst landscapes. It brings together cavers, scientists, and enthusiasts to promote safe caving practices, share knowledge, and protect underground environments. The NSS provides resources, organizes expeditions, and fosters research to better understand cave geology, ecology, and history. Through education and advocacy, it aims to ensure caves are preserved and enjoyed responsibly for future generations. Founded in 1941, the NSS is a leading authority in the caving community in the United States.