Despite being a place that some dare not enter, the forest boasts pools fed by living springs. It is a place that absorbs the falling rainwater in the summer and releases its spring water in the winter, serving as a natural reservoir for Chienkung.
儘管人們不敢進入，然而保安林中湧泉不斷的池塘，夏天可以吸納雨水，冬天則釋放水源，是建功社區天然的調節水庫。