Question: 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? 
Sentence (from "Tenjō-Yama Park Mt. Kachi Kachi Ropeway"): "Mt. Kachikachi"), a folktale which took place on the mountain.
Relevant evidence: No