Welcome to the National Speleological Society – Cave Diving Section (NSS-CDS), the largest cave diving organization in the United States, with a presence in 25 countries.

Cave diving is underwater diving in submerged caves (Wikipedia). It can be rewarding for those with the proper training, equipment, and skills. However, it can also look deceptively easy and be extremely dangerous – especially for those who lack the prerequisite knowledge, equipment, and skills. To date, over 400 divers have perished in underwater caves—none of them intended to die. Get the right training and equipment. Protect your life.  It’s just that simple.