There was a large eruption at the base of Fuji mountain 1200 years ago and a large amount of lava flew creating many caves out of the solid lava flow. After that, Mt Fuji's melted snow came into the frozen caves and formed beautiful ice art. This is an adventure tour where you can explore a rare cave which is so unique that you cannot find anywhere else. Have to walk with only a single headlight and you will enter the world of 0°C in the caves that is made by the great Mt Fuji. With full of thrill, using your five senses.  Your guide with full knowledge of the area will assist you to enjoy the area fully. With this tour, walk through a mysterious and beautiful forest - the Sea of Trees/Aokibara Forest with a highly experienced English guide. During the tour, experience full of adventure and excitement that will stimulate all senses, have chance to view the natural ice art that created Mt. Fuji through its history.   The tour is operated in a small group, normally individual guests require to obtain a special entry permit; however we are the only group tour that  includes this in the tour.  The tour also include entry to the "Real Cave" where is secluded and hasn't became a tourist attraction, and also experience the world of 0 degree Celsius natural caves created by Mt. Fuji.  Schedule 1. Meet at meeting point. 2. Tour preparation (helmet, headlight, overall, gloves, clothes to change ,toilet and calm down your feelings) 3. Move to departure site of the tour 4. Walking in Aokigahara Forest (40 minutes), exploring the lava cave (60 minutes) and walking in Aokigahara Forest (40 minutes) 5. Move to the meeting point 6. Review and breaking up 7. Go home safely Depending on tour progress, there is time fluctuation.