The soil of Tawu Mountain is loose, soft and given to collapsing. Excavation of the tunnels was particularly dangerous. At the side of the Kuchuang train depot stands a memorial plaque commemorating 17 construction workers who died on the job while boring tunnels.
大武山的土質鬆軟，容易坍崩，隧道工程特別危險，在古莊車站旁有一個紀念碑，即是悼念因開鑿隧道殉職的十七位工程人員。