There are tons of sinkholes in Florida. They've killed people, suck down homes and hotels. But you should be amazed to hear that despite the risk, there's no state requirement to test for sinkholes before building.
CNN's John Zarrella has more OutFront.
In a dramatic new video, a sinkhole swallows part of Louisiana.
It started last year, when a deep pit 400 feet wide opened up and started swallowing hundreds of trees.
On Wednesday, the hole started caving in again.
John Zarrella is OutFront with the story.
This week, guests and staff at an Orlando area resort were sent running for their lives after a sinkhole swallowed parts of a resort near Walt Disney World.
The sinkhole left a gaping hole in the earth - nearly 120 feet wide.
It's been happening across the country for years and could happen again at any moment.
How serious is the threat?
CNN's John Zarella is OutFront with the story.
A 100-foot sinkhole has opened up under the Summer Bay Resort. It's in a popular area, just a few miles away from Disney World.
It caused a three-story building to collapse and another to sink.
Florida sinkhole swallows parts of resort near Disney World
Fortunately, no one was injured.
Martin Savidge reports for OutFront.
Underground cavities in the U.S. are ticking time bombs that could suddenly turn into deadly sinkholes.
In March, a Florida man died after his bed was swallowed by a sinkhole that had opened up under his house.
That was a naturally-occurring disaster.
Authorities: Sinkhole victim's body unreachable
But in New Mexico, a man-made cavern is threatening to swallow up a big chunk of one town - and its residents.
Ed Lavandera has an Out Front investigation.