Aokigahara

Aokigahara (青木ヶ原^?), also known as the Sea of Trees, is a forest on the northwestern flank of Japan's Mount Fuji thriving on 30 square kilometers (12 square miles) of hardened lava. The western edge of Aokigahara, where there are several caves filled with ice, is a popular destination for tourists and children on school trips. Parts of Aokigahara are very dense, and the porous lava absorbs sound, helping to provide visitors with a sense of solitude. Recent portrayals of Aokigahara in English-language movies as a place avoided by animals and where navigational compasses go haywire are false. The Aokigahara woods are home to deer, foxes, bears and many species of birds, which can be heard whistling and chirping. The needle of magnetic compasses will move if placed directly on the lava, but compasses should work fine if held at a normal height.

The forest has a historical reputation for paranormal activity and as a home to "yūrei" or ghosts of the dead in Japanese mythology. In recent years Aokigahara has become internationally known as one of Japan's most popular destinations for suicide, and signs at the head of some trails urges suicidal visitors to think of their families and contact a suicide prevention association.

The forest floor consists primarily of volcanic rock and is difficult to penetrate with hand tools such as picks or shovels. The forest itself is very dense, and one can get lost easily if leaving the official trails. Because of this, in recent years, hikers and tourists trekking through Aokigahara have begun to use plastic tape to mark their paths so as to avoid getting lost. Past the designated trails leading to tourist attractions such as the Ice Cave and Wind Cave, the first kilometer of the forest is littered with tape and other rubbish left by tourists, despite officials' attempts to remove it. After the first kilometer into Aokigahara towards Mount Fuji within the Fuji-Hakone-Izu National Park, the forest is in better condition, with little to no litter and few obvious signs of human presence.

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Wikipedia