Golf course Sinkhole in Japan
A woman plunged into a sinkhole. She was playing golf with her family in the Le Petaw Golf Club in Sapporo, Japan. The sinkhole collapsed into a 15 deep carvern that existed underground. it is unclear how long before the sinkhole had formed, however, it is likely that it was just hours. The cavern was filled with water, and the woman drawned before she could be rescued.
It is believed that the cause for the sinkhole was due groundwater from a nearby pond.