[PAR] [TLE] Aokigahara [SEP] Aokigahara (青木ヶ原 ) , also known as the Suicide Forest or Sea of Trees (樹海 , Jukai ) , is a forest on the northwestern flank of Japan's Mount Fuji thriving on 30 square kilometers (12 square miles) of hardened lava laid down by the last major eruption of Mount Fuji in 864 CE.  The western edge of Aokigahara, where there are several caves filled with ice, is a popular destination for tourists and school trips.  Parts of Aokigahara are very dense, and the porous lava absorbs sound, helping to provide visitors with a sense of solitude. [PAR] [TLE] Tenjō-Yama Park Mt. Kachi Kachi Ropeway [SEP] The Tenjō-Yama Park Mt. Kachi Kachi Ropeway (天上山公園カチカチ山ロープウェイ , Tenjōyama Kōen Kachikachiyama Rōpuwei ) , officially the Lake Kawaguchi Mt. Tenjō Ropeway (河口湖天上山ロープウェイ , Kawaguchiko Tenjōyama Rōpuwei ) , is a Japanese aerial lift line in Fujikawaguchiko, Yamanashi, operated by Fuji Kyuko.  Opened in 1959, the line climbs Mount Tenjō from the shores of Lake Kawaguchi, one of the Fuji Five Lakes.  The line name comes from "Kachi-kachi Yama" (lit.  "Mt. Kachikachi"), a folktale which took place on the mountain.  The observatory has a view of the lake, as well as Aokigahara forest, and Mount Fuji.
[PAR] [TLE] Aokigahara [ SEP ] Aokigahara ( 青木ヶ原 ) , also known as the Suicide Forest or Sea of Trees ( 樹海 , Jukai ) , is a forest on the northwestern flank of Japan 's Mount Fuji thriving on 30 square kilometers ( 12 square miles ) of hardened lava laid down by the last major eruption of Mount Fuji in 864 CE . The western edge of Aokigahara , where there are several caves filled with ice , is a popular destination for tourists and school trips . Parts of Aokigahara are very dense , and the porous lava absorbs sound , helping to provide visitors with a sense of solitude . [PAR] [TLE] Tenjō - Yama Park Mt. Kachi Kachi Ropeway [ SEP ] The Tenjō - Yama Park Mt. Kachi Kachi Ropeway ( 天上山公園カチカチ山ロープウェイ , Tenjōyama Kōen Kachikachiyama Rōpuwei ) , officially the Lake Kawaguchi Mt. Tenjō Ropeway ( 河口湖天上山ロープウェイ , Kawaguchiko Tenjōyama Rōpuwei ) , is a Japanese aerial lift line in Fujikawaguchiko , Yamanashi , operated by Fuji Kyuko . Opened in 1959 , the line climbs Mount Tenjō from the shores of Lake Kawaguchi , one of the Fuji Five Lakes . The line name comes from " Kachi - kachi Yama " ( lit . " Mt. Kachikachi " ) , a folktale which took place on the mountain . The observatory has a view of the lake , as well as Aokigahara forest , and Mount Fuji .
In what year did the eruption occur that laid down the lava upon which a famous forest visible from the Tenjō-Yama Park Mt. Kachi Kachi Ropeway?
In what year did the eruption occur that laid down the lava upon which a famous forest visible from the Tenjō - Yama Park Mt. Kachi Kachi Ropeway ?
864 CE
864 CE