Back to Sid's filmography: This film is devoted to the ice caves of the Austrian Tennengebirge Alps, including Eisriesenweld and Eiskogelhöhle. It features the Austrian caver Fritz Oedl, the Belgian caver Guy Meauxsoone, and Ian "Tommo" White from the Northern Cave Club. It was first shown on Channel 4 on 15th February 1986, and it won a special mention at the 5th Festival Internacional de Cinema Espeleològic in Barcelona in 1986.