There's nothing unusual about parts of the railway roadbed getting washed away or collapsing. In the past, the Forestry Bureau would repair the damage immediately to get the trains running again ASAP.
阿里山森鐵沿線路基滑走的情況十分常見，過去以服務民眾為宗旨的林務局總是立即搶修，儘快恢復通車。