In 1989, the city government opened up the eastern part of the mountain below 250 meters for recreational use. This created a huge inflow of visitors. However, with visitors having little regard for the environment, Takao Hill's environment quickly suffered serious damage. Garbage was strewn everywhere.
民國七十八年前，市政府開放柴山海拔二百五十公尺以東的區域供民眾休憩，大量的遊憩人潮湧入，在遊客缺乏生態觀念與自製行為之下，柴山的環境迅速遭受破壞，垃圾隨地可見；步道被越踩越寬；台灣獼猴等的珍奇動植物也遭獵捕、盜採。