It fell and shattered around Mt. Chialuo, creating these lakes. In April 1999 some careless hikers caused a forest fire that burned 50 hectares of forest hereabouts.
1999 年 4 月，一場因登山客不慎引發的森林大火，燒掉約 50 公頃的林木，卻也意外地證實，加羅湖泊群很可能是台灣僅存的冰河時期遺留的泥碳沼澤。