Video: Somewhere deep inside Sweden’s underwater Bjurälven cave system in the freezing mountains of Jämtland lies a 100 metre long air filled tunnel named ‘The Secret’!
Three divers first ever dive in to the air filled tunnel within the Bjurälven cave system. The tunnel was found in 2013 and visited by 9 divers before us. The air tunnel is approximately 100 meters long and named “The Secret” (sv. Hemligheten) by the divers first entering.
