In 2015, Micke Tilja and two other divers took their first ever underwater dive into an air filled tunnel, which was approximately 328 feet long and named “The Secret,” within the Bjurälven cave system in Jämtland, Sweden.
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 aprox. 100 meters long and named “The Secret” (sv. Hemligheten) by the divers first entering.