During the eruptions of Mt. Unzen-Fugendake, which lasted about 5 years from 1990, the lava domes formed at the summit often collapsed at once and generated large-scale pyroclastic flows. The farthest reaching pyroclastic flow was the one occurred on 19 July 1993. It descended about 5.6 kilometers from the summit and crossed the National Route 57 by about 80 meters. Since the pyroclastic flow crossed the National Route, which was an important lifeline, it had a serious effect on the later measures for disaster management. At the point where the pyroclastic flow reached to the farthest, a pillar with the words "Farthest Reaching Point of Pyroclastic Flow" and an interpretation panel with photos of the eruptions have been set up. The area, that was once in danger of pyroclastic and debris flows and hit by debris flows many times, has been later developed as a park called "Fukae Sakura Park" and now become a place of relaxation for children and families.