Since 1941 the National Speleological Society has been dedicated to protecting, studying, and exploring caves. With 8,000 members we are the largest cave focused membership organization in the world.

The National Speleological Society (NSS) is an organization formed in 1941 to advance the exploration, conservation, study, and understanding of caves in the United States. Originally headquartered in …

The 2025 US National Security Strategy On 5 December 2025, the White House released the 2025 United States (US) National Security Strategy (NSS). The NSS lays out the US foreign policy …

NSS is a registered 501 (c) (3) nonprofit organization.

6 days ago · The 2025 U.S. National Security Strategy (NSS) outlines the second Trump Administration’s aim to shift how U.S. foreign policy prioritizes different regions of the world. The shift …

6 days ago · Trump’s NSS 2025 signals a postliberal turn—retreating from liberal hegemony, reframing alliances transactionally, and exposing contradictions of a declining power The second Trump …

Dec 18, 2025 · The Trump Administration's NSS reads like a philosophical argument, because it assumes that clarity precedes consensus.

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 …

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 …

Become a part of the world’s largest caving network. Connect with fellow explorers and access training, events, gear discounts, and more. Explore the full list of benefits below. Get digital access to 80+ …