We are the National Speleological Society
Founded in 1941, the NSS is the largest membership organization dedicated to caves & caving. Composed of over 8,000 members and 250+ local chapters - known as grottos - we work to connect cavers so they can work on exploring, studying, and conserving caves worldwide.
Whether you are just starting or have been caving for years, membership in the NSS means being a part of the largest community of cavers in the world.
Attending a grotto meeting - held all over the country every week - means being involved in countless caving trips, projects, and conservation efforts
What We Do
The National Speleological Society (NSS) is a non-profit membership organization dedicated to the scientific study of caves and karst; protecting caves and their natural contents through conservation, ownership, stewardship, and public education; and promoting responsible cave exploration and fellowship among those interested in caves.
Come caving with us!
Whether you are just starting or have been caving for years, the NSS is the best place to start. With over 250 local chapters - known as grottos - there is a community of cavers near you!
Whether through scientific grants or the work of it's members, the NSS is dedicated to furthering human knowledge about the underground environment.
With over 23 preserves and countless other initiatives, the NSS works everyday to preserve the underground environment for future generations. Learn about our conservation efforts or visit a preserve.
Few activities provide the opportunity to explore never-before-seen places on earth. Every year NSS members are involved in exploring some of the most significant caves on earth.
Being an NSS member means connecting with other cavers and staying on top of discoveries, gear, and developments in speleology. With events throughout the year, there are plenty of ways to connect!
Interested in becoming a member?
Be a part of the largest cave membership organization in the world and help us explore, protect, and study caves! Sign up today and get access to:
Join today, find your grotto, and start caving!