 People have always wanted to reach the center of the Earth. There are thousands of caves deeper than 100m, hundreds of caves deeper than 1000m but only a few are deeper than 1500m. In the eyes of every caver, it is a fantasy to visit a cave more than 1000m deep or even more so to take part in the exploration of such a cave, Caves are possibly the last "white spots" on the world s map, the last opportunity to walk, where man s step has never trod or even more so man s eye hasn t seen or recorded it by camera.