Aokigahara Forest is located at the base of Mount Fuji in Japan. This is a site of mass suicide; nore than 500 people have taken their own lives in Aokigahara since the 1950s. Seicho Matsumoto's novel Kuroi Kaiju (Black Sea of Trees) probably started the trend. After the book was published, hundreds of Japanese people have hanged themselves among the countless trees of the Aokigahara Forest. Besides bodies, the area is filled with signs displaying such messages like "Life is a precious thing! Please reconsider!" or "Think of your family!"