Aokigahara Forest - Suicide Forest is sometimes referred to as the most popular site for suicide in Japan. In 2003, 105 bodies were found in the forest, exceeding the previous record of 78 in 2002. In 2010, the police recorded 54 confirmed suicides out more than 200 attempts. Mt Fuji looms above Aokigahara Forest. Known as the Sea of Trees for its density, Aokigahara Forest lies at the foot of Mt Fuji and can easily be combined with a visit to the mountain.

The Dragon Cave near Lake Kawaguchiko is not only a geological marvel but also a place of deep cultural significance and mystical lore. Its association with dragons, legends of dragon princesses, and the belief in its spiritual energy make it a captivating destination for those seeking a connection with Japan's rich cultural heritage and the natural world. Whether you visit for its history, spirituality, or sheer beauty, the Dragon Cave offers a unique and enchanting experience in the Fuji Five Lakes region.

It is one of the three larger lava tubes at the northern foot of Mount Fuji. The Narusawa Ice Cave is 156 metres long measured along the visitor route with two lobes, with the width of 1.5 to eleven metres and the height of one to 3.6 metres. The average temperature inside the cave is about 3°C. The cave was long used as a natural refrigerator. During the Edo period, ice cut in this cave was sent to the shōgun and his entourage in Edo. During the early 1900s, ice made here had been used in the refrigerator before the electric refrigerator arrived.

Lake Sai Bat Cave is the largest of the several lava tubes that are near Lake Sai, in the Aokigahara forest in the northern side of Mount Fuji, Japan. It is known as a cave where visitors can observe the bats which live there.

The 864 A.D. eruption of Mount Fuji brought huge lava flows, creating Lake Shōji and Lake Sai of the Fuji Five Lakes by dividing Se-no-umi into two, several cinder cones such as Ōmuro and Nagao mountains, and a large flat area now called the Aokigahara Forest.