Aokigahara Jukai, Fujikawaguchiko

Aokigahara Forest, also known as the Sea of Trees or Jukai, is a dense woodland located at the northwest base of Mount Fuji in Yamanashi Prefecture, Japan. The forest covers approximately 30 square kilometers and was formed by a massive eruption of Mount Fuji in 864 CE, which left behind a rugged lava plateau now covered by thick vegetation. The volcanic rock beneath the forest creates an uneven, cave-riddled terrain that has remained largely undisturbed for over a millennium.

The forest holds deep cultural significance in Japanese history and literature. It has been associated with the practice of ubasute, the alleged abandonment of elderly or infirm family members during times of famine, though historical evidence for this practice is limited. The forest gained literary prominence through Seicho Matsumoto's 1960 novel "Tower of Waves," which depicted it as a setting for tragic events. Today, Aokigahara is recognized for its unique ecological characteristics, featuring moss-covered lava formations, twisted tree roots, and an exceptionally quiet atmosphere due to the dense vegetation that dampens sound.

Visitors to Aokigahara can explore several marked trails that showcase the forest's natural beauty and geological features. The Narusawa Ice Cave and Fugaku Wind Cave, both located near the forest's edge, offer opportunities to examine lava tube formations and year-round ice structures. The main walking paths include well-maintained wooden boardwalks and clearly marked routes that prevent visitors from getting lost in the dense woodland. The forest's volcanic soil supports unique plant species, and the twisted shapes of the trees growing from the lava rock create distinctive landscapes for nature photography and study.

Aokigahara Forest is accessible from Kawaguchiko Station, which is approximately 2.5 hours from Tokyo by train and bus combination. The Fujikyu Railway Line connects to Kawaguchiko, and from there, local buses run to the forest area and nearby caves. A rental car provides greater flexibility for exploring multiple sites around Mount Fuji's base. Entry to the forest trails is free, though the ice caves charge admission fees of approximately ¥350 per person. Visitors are strongly advised to stay on marked trails, as the forest's terrain is difficult to navigate and the volcanic rock can be hazardous.