This photo shows a giant sinkhole (C) in a five-lane urban boulevard, eroding soil and exposing underground steel columns supporting commercial buildings in Fukuoka, southwestern Japan, on November 8, 2016. No injuries were reported as the accident occurred in the early morning hours. / AFP / JIJI PRESS / STR / Japan OUT (Photo credit should read STR/AFP/Getty Images) STR/AFP/AFP/Getty Images

Eight Corvettes fell into a sinkhole that opened up beneath a section of the National Corvette Museum in Bowling Green, Kentucky, on February 12. The sinkhole was about 40 feet wide and 25-30 feet deep. Corvette Museum

An increasing number of sinkholes have appeared in and around the neighborhood where the Lotte World Tower is being built in Seoul, South Korea. The first one was discovered in June and several others have appeared since then, according to local media reports, causing the construction of what would be Seoul's tallest building to come under scrutiny. Ahn Young-joon/AP/File

The rear portion of a residential home is consumed by a sinkhole November 14 in Dunedin, Florida. Luke Johnson-Pool/Getty Images

A 60-foot-wide sinkhole formed underneath the Summer Bay Resort in Clermont, Florida, about 10 minutes from Walt Disney World, on August 11. One resort building collapsed, and another slowly sank. Red Huber/Orlando Sentinel/MCT/LANDOV

A backhoe is swallowed by a sinkhole in Montreal, Quebec, Canada, on August 6. The driver of the backhoe was not injured. Graham Hughes/The Canadian Press/ap

A sinkhole killed a guard at a construction site in Shenzhen, China, on March 27. The sinkhole might have been caused by heavy rains and the collapsing of old water pipes running beneath the surface, the Shenzhen Special Zone Daily reported. STRINGER/AFP/Getty Images

Workers watch the demolition of the house where a sinkhole opened three days before in Seffner, Florida, on March 3. Sinkholes caused by acidic groundwater corroding the limestone or carbonate rock underground are common in Florida, according to the Florida Department of Environmental Protection. REUTERS /SCOTT AUDETTE /LANDOV

Buildings fell into a sinkhole near a subway construction site in Guangzhou, China, in January 2013. The hole measured about 1,000 square feet across and 30 feet deep and was without casualties, according to a state media report. STRINGER/AFP/Getty Images

A basketball court in Ortley Beach, New Jersey, fell into a sinkhole caused by Superstorm Sandy in November 2012. Mark Wilson/Getty Images

In July 2011, a man inspects a 40-foot-deep sinkhole that a family found after they heard a booming noise in their kitchen in Guatemala City, Guatemala. JOHAN ORDONEZ/AFP/Getty Images

Construction on a subway line caused a huge sinkhole to form in a road in Beijing in April 2011. STR/AFP/Getty Images

An aerial photo shows sinkholes created by the drying of the Dead Sea near Israel in 2011. MENAHEM KAHANA/AFP/Getty Images

A utility worker examines the area around a sinkhole caused by a broken water main in Chevy Chase, Maryland, in December 2010. Logan Mock-Bunting/Getty Images

Tropical Storm Agatha caused a sinkhole to open in Guatemala City in May 2010. EPA/PRESIDENCY/HO/Luis Echeverria /Landov

A fire truck protrudes from a sinkhole as Los Angeles Mayor Antonio Villaraigosa talks to reporters in September 2009. David McNew/Getty Images

A water main collapsed an entire block-long part of Ocean Park Boulevard in Santa Monica, California, in December 2002. MIKE NELSON/AFP/Getty Images

In Orlando, a sinkhole 150 feet wide and 60 feet deep swallowed trees, pipelines and a section of sidewalk near an apartment building in June 2002. Chris Livingston/Getty Images

A 30-foot-deep sinkhole appeared in a busy street in a suburb east of downtown Los Angeles. A motorist drove into the hole but was rescued before a concrete slab fell onto the car. CARLOS SCHIEBECK/AFP/Getty Images