Located at the southernmost tip of the Izu Islands in Japan, it is a volcanic island with an area of about 5.96 square kilometers. About 360 kilometers from Tokyo, solitary hanging in the Pacific Ocean, is a typical double-type caldera volcano. Known for its precipitous terrain and unique volcanic landforms, it is surrounded by steep cliffs and has almost no flatlands along the coast. The island is rich in post-volcanic activity, including geothermal fumaroles and hot springs in the sea, enjoying the three warmth of natural geothermal heat. It is a nature lover's paradise and one of the most inaccessible places in Japan. The natural beauty, unique culture and history make it a tour full of mysteries and challenges

It is a unique natural scenery known for its undulating terrain and winding water flow. Rivers often flow in hilly areas, forming a series of beautiful valleys and riverbanks. Usually clear to the bottom, with dense vegetation on both sides, providing abundant habitats for wildlife and plants. The terrain is constantly changing, and rivers exhibit different styles in different areas. In steeper river sections, the river flows rapidly, forming spectacular waterfalls or rapids; In relatively flat areas, rivers appear calm and wide, with blue skies and white clouds often reflected on the water surface. Not only does it provide visual enjoyment for tourists, but it also allows for outdoor activities such as hiking, camping, fishing, etc