The sinkhole suddenly opened at an intersection in the Japanese city of Yashio. A second sinkhole nearby is hampering rescue efforts.

When the sinkhole developed on the morning of Jan. 28, the 2-ton truck and its driver in his 70s fell in. During the rescue operation, another sinkhole formed on the road on Jan. 29.

At first the sinkhole was roughly 10 meters (33 feet) wide and 5-meters (16-feet) deep, but it has since grown to twice that size. What about the driver? A 74-year-old man is believed to be ...