

Caves of Glass is a documentary from director Sid Perou's Realm of Darkness series, focusing on the ice caves of the Austrian Tennengebirge Alps, including the Eisriesenweld and Eiskogelhöhle. It features Austrian speleologist Fritz Oedl, Belgian speleologist Guy Meauxsoone, and Ian "Tommo" White of the Northern Caving Community. First broadcast on Channel 4 on February 15, 1986, it won a Special Mention at the 5th Barcelona International Festival of Esoteric Cinema that same year.

David Fleeshman
Narrator
Lead
Guy Meauxsoone
Self
Fritz Oedl
Self
Ian "Tommo" White
Self
“A staggering achievement of craft and ambition. Sid Perou's vision lands with breathtaking precision.”
“Every frame feels alive. Realm of Darkness - Caves of Glass is the rare release that takes its audience seriously.”