 The Sarma exploration project wasn t only the chance to break the world record held by Voronja, but also the first time the team s work was filmed all the way down the cave. First visuals from the depth of more then 1500m. The film is about the victorious adventure of the last expedition to the cave. the struggle, the camp life, underground life and adventure, the injuries, people s relationships, the fun and the difficulty of rope work, ways to find a new cave and more - a documentary 1500m deep.