A retirement community in Florida is both physically and figuratively on edge as a sinkhole between two houses appears to be reopening after it was filled.
Sinkhole opens up between homes in retirement community
Guests had only 10 to 15 minutes to escape the collapsing buildings at the Summer Bay Resort on U.S. Highway 192 in the Four Corners area, see Monday, August 12, 2012, located about 7 miles east of Walt Disney World resort, where a large sinkhole - about 60 feet in diameter and 15 feet deep - opened in the earth late Sunday, August 11. (Red Huber/Orlando Sentinel/MCT via Getty Images)
LONGMONT, CO. - SEPTEMBER 20: Ron Krenzel pulls his dog Daisy out of the river after she fell down the collapsed bridge near his home in Longmont, CO September 20, 2013. Krenzel was stranded in his home for three days. His truck fell into a sinkhole on Friday while he was trying to drive to the store. He escaped through the back window. (Photo By Craig F. Walker / The Denver Post)
TORONTO, ON - JULY 9 - A sinkhole on Disco Rd. near the Hwy 427 is seen as a result of Monday's rain storm. July 9, 2013. (Andrew Francis Wallace/Toronto Star via Getty Images)
Rescuers cover a dead body found in a sinkhole on a road in Shenzhen, south China's Guangdong province on May 21, 2013. Five people died when a 10 metre (33 feet) wide sinkhole opened up at the gates of an industrial estate in Shenzhen, the southern Chinese boom town neighbouring Hong Kong, local authorities said on May 21. CHINA OUT AFP PHOTO (Photo credit should read AFP/AFP/Getty Images)
CHICAGO, IL - APRIL 18: Workers pull a truck from a sinkhole that opened up on a residential street in the South Deering neighborhood on April 18, 2013 in Chicago, Illinois. The driver of the truck was hospitalized after driving into the 15-feet-deep hole while on his way to work. Two other vehicles were also swallowed by the sinkhole. (Photo by Scott Olson/Getty Images)
A sinkhole swallows three cars at 9600 South Houston Avenue in Chicago, Illinois, Thursday, April 18, 2013. One person was hospitalized. (Zbigniew Bzdak/Chicago Tribune/MCT via Getty Images)
A look inside of a large sinkhole on highway 24 at mile marker 165 between Red Cliff and Leadville Friday morning, July 13th, 2012. Crew from the Colorado Department of Transportation were on hand surveying the sinkhole which opened up Monday. The sinkhole, developed above a century-old Rio Grand Railway tunnel that measures 25x20 feet and approximately 50-60 feet deep. CDOT plans to put out the construction contract right away to begin repairs ASAP. Andy Cross, The Denver Post (Photo By Andy Cross/The Denver Post via Getty Images)
Colorado Department of Transportation project engineer, Matt Figgs, right, uses a handheld mirror to shine a light down into a large sinkhole for aerial reconnaissance remote control pilot, David Wilbur, who was taking pictures Friday morning of the sinkhole on highway 24 at mile marker 165, between Red Cliff and Leadville Colorado Friday morning, July 13th, 2012. The sinkhole opened up Monday above a century-old Rio Grand Railway tunnel that measures 25x20 feet and approximately 50-60 feet deep. CDOT plans to put out the construction contract right away to begin repairs ASAP. Andy Cross, The Denver Post (Photo By Andy Cross/The Denver Post via Getty Images)
Colorado Department of Transportation project engineers, Joe Elsen, fourth from left, and Matt Figgs, far right, offer hikers from left to right, Marlowe Kent, Lauren Jerd, and Shane O'Donnell, a safe, private look at large sinkhole Friday morning, July 13th, 2012 that opened up on highway 24 at mile marker 165, between Red Cliff and Leadville Colorado on Monday. The sinkhole, developed above a century-old Rio Grand Railway tunnel that measures 25x20 feet and approximately 50-60 feet deep. CDOT plans to put out the construction contract right away to begin repairs ASAP. The hikers are on a five-month trek across the Continental Divide. Andy Cross, The Denver Post (Photo By Andy Cross/The Denver Post via Getty Images)
BACK TO SLIDE
WTSP says, "A huge sinkhole that was filled just days ago in the retirement community of The Villages appears to be opening up again. It is threatening two homes in Sumter County."
WOFL says residents noticed the sinkhole over Easter weekend. Repair crews attempted to fill it and the ground was said to be stabilized. But then neighbors noticed the sinkhole was growing.
The sinkhole was about 65 feet wide and and 75 feet deep. Crews have now filled the hole with dirt and plan on monitoring it to see if it grows any more.
WJXT notes sinkholes have become a regular phenomenon. Last March, a Florida man died when a sinkhole essentially swallowed him alive while he was sleeping.
More recently, the ground opened up under part of a museum in Kentucky, swallowing up eight cars. They were corvettes belonging to the National Corvette Museum in Bowling Green.
But "CBS This Morning" says NASA is working on research that will help determine where sinkholes will open and whether they'll spread.
"Using unique radar technology that transmits electronic pulses, scientists can map out how the Earth's crust is shifting ... How accurate is this radar? centimeters, down to the centimeter level."
NASA says research shows surface layers move just slightly before a collapse - in some cases, even a month before the ground seemingly just disappears.
"This kind of movement may be more common than previously thought, particularly in areas with loose soil near the surface."