Synopsis

In November of 2021, a road in Mikasa, Hokkaido Prefecture, unexpectedly gave way, opening into a substantial chasm. A vehicle plunged into the newly formed void, resulting in serious injuries to its three occupants. The incident occurred without prior indication, and no underground construction had been taking place nearby. Road cave-ins and sinkholes are a global phenomenon, affecting cities worldwide. A primary contributor to these events is the deterioration of aging underground pipes. Exper