Join or Renew Today

The National Speleological Society was founded in 1941. With more than 8,000 members and 250 Grottos (local chapters), it's the world's largest organization dedicated to fostering fellowship among cavers and advancing the exploration, study, and protection of caves and their environments.

Being a part of the NSS means being connected to cavers everywhere. There is no better way to get access to trips, training, fellowship, and more. 

To renew online, please click the button below and select "Securely renew your membership now" after signing in.

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To join online, click the button below. To join or renew by mail, use thePDF FORM

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 NSS NUMBERS ARE ASSIGNED MANUALLY BY THE OFFICE STAFF AND CAN TAKE UP TO TWO BUSINESS DAYS FROM THE DATE YOU SIGN UP. 

If you're having issues signing in, ensure you are using Google Chrome or Firefox. If issues persist, please email memberservices@caves.org or contact the NSS Office at (256) 852-1300.