In a sport once tagged as the domain of adrenaline junkies, cave divers have become an important asset to scientists exploring global climate change, archaeology, water issues, and unique biology. Canadian cave diver, underwater explorer, writer, photographer, and filmmaker Jill Heinerth will share stories from expeditions into caves from Antarctica and Bermuda to the Bahamas. She’ll offer a fast-paced multimedia show about tiny venomous creatures and ancient lofty stalagmites that tell the story of Earth before man.

Talks begin at 7:30pm; tickets are FREE for RSGS Members, U18s and Students, or £6 for visitors.