1. Lisbon, Portugal, Sinkhole
A parked bus was the unfortunate “meal” of a sinkhole that opened up in the streets of Lisbon, Portugal, in 2003.
“Anything that increases the flow of water into subsurface soil can speed up the formation of sinkholes’” ,Missouri State’s Gouzie said. In many cities, utility infrastructure such as sewer lines and fiber optic cables are buried in troughs filled with loose material, which can wash away over time. In some cases, a stretch of road can essentially become a concrete bridge over mostly empty space.
“It’s eventually not enough to hold the weight of the next truck over it,” Gouzie said.
2. Guatemala Sinkhole
Heavy rains from tropical storm Agatha likely triggered the collapse of a huge sinkhole in Guatemala on Sunday, seen above a few days afterward.
In the strictly geologic use of the word, a sinkhole happens when water erodes solid bedrock, carving an underground cavity that can then collapse. Many parts of the United States are at risk for that type of event.
The Guatemala sinkhole fits into a broader use of the term, which refers to any sudden slump of the ground’s surface. Instead of solid bedrock, much of Guatemala City rests atop a layer of loose, gravelly volcanic pumice that is hundreds of feet thick. And at least one geologist says leaking pipes—not nature—created the recent sinkhole.
Overall, the risk for repeat sinkholes in Guatemala City is high—but highly unpredictable.
3. Winter Park, Florida, Sinkhole
he sinkhole in Winter Park, Florida (map), opened up in 1981 underneath the city’s public swimming pool, Missouri State’s Gouzie said.
“I’ve never seen a final report as to whether the pool was leaking,” he said, adding that water can flow into the underlying soil through tiny cracks in the bottom of a pool. Even watering plants at the pool’s perimeter could have sent enough runoff through Florida’s sandy soil to erode the solid limestone underneath.
Gouzie said the U.S. Geological Survey has mapped the types of bedrock that exist across the country. But studies of the underground cracks and fissures—and the way water travels through them—are still needed to predict where sinkholes could occur.
4. Mulberry, Florida, Sinkhole
This 185-foot-deep (56-meter-deep) sinkhole appeared in 1994 in Mulberry, Florida (map), in a pile of waste material dumped by mining company IMC-Agrico. The company was mining rock to extract phosphate, a main ingredient in fertilizers and a chemical used to produce phosphoric acid, added to enhance the taste of soda and various food items.
After phosphate was extracted from the rocks, the gypsum-based waste product was dumped as a slurry. As layer after layer of the stuff dried, it formed cracks, like those that appear in dried mud. Water later made its way through the cracks and carried away subsurface material, setting the stage for a sinkhole.
5. Blue Hole, Belize
Sinkholes can happen anywhere water can erode a vertical channel that connects to a horizontal drain, a situation that allows a column of solid material to wash away, Missouri State’s Gouzie explained.
If the sinkhole is near the sea—or in the sea, as with the famous Blue Hole in Lighthouse Reef off the coast of Belize—seawater can quickly seep in after a collapse, forming a deep pool.
6. Picher, Oklahoma, Sinkhole
Years of mining for zinc and lead has left Picher, Oklahoma, near the border with Kansas, literally full of holes—including this sinkhole seen in 2008. Some mines were dug too close to the surface, and the roofs were unable to support the weight of earth on top, leading to collapses.
“It has happened in Missouri and in western Pennsylvania from coal mining,” Missouri State’s Gouzie said. “We’ve gotten better with buidlng mines so the roofs can support the weight over top of them.”
7. Iceland Sinkhole
Adventure kayaker Mick Coyne lowers himself down the wall of a sinkhole toward the headwaters of the Jokulsa, Iceland’s second longest river. Though the river is fed by melt from a glacier, this 150-foot (45-meter), inverted funnel-shaped hole was blasted into being by rising steam from geothermal vents below.
8. Ik-Kil Cenote, Mexico
Swimmers float in the saphirre waters of the Ik-Kil cenote, near the Maya site of Chichén Itzá in Mexico’s Yucatán Peninsula. Cenote means “natural well” in Spanish. Sinkholes occurring at sea level will fill up as high as the water table, creating the famous clear blue pools, used by the Maya royalty for both relaxation and ritual sacrifices.
9. Neversink Pit, Alabama
Neversink Pit, a wet limestone sinkhole in Alabama seen above in 1998, is about 50 feet (15 meters) deep and houses a rare species of fern. The sinkhole was bought in the 1990s by a group of cavers to preserve it for future generations.
Karst is the geologic term for landscapes formed mainly by the dissolving of limestone or dolomite bedrock. In the United States, karst underlies parts of Missouri, Arkansas, Kentucky, Tennessee, northern Alabama, Texas, and most of Florida. Such areas are marked by sinking streams, subterranean drainage, large springs, caves—and, of course, sinkholes.
Youâ€™ve probably already seen photos of Liu Bolin â€“ the real life invisible man, now itâ€™s time you met Desiree Palmen, the invisible woman.
Just like the famous Chinese artist weâ€™ve featured before, Desiree Palmen is a master of the camouflage who manages to perfectly blend into the background. She first takes photos of the scene she wants to blend into, and then spends hour in her Rotterdam studio painstakingly painting cotton suites to best simulate the scenery. Then she or another person puts on the suit and poses in the selected place. Although her patience and painting skill are amazing, Desiree remains modest and says itâ€™s never perfect, but she likes people can actually see itâ€™s a person in a suit and not a digitally altered image.
The 46-year-old artist says her work was inspired by the increasing use of â€œBig Brotherâ€ surveillance in everyday life and manâ€™s wish to simply disappear. Ms. Palmen also says people react differently when seeing her artworks, some are confused others are surprised, but they all seem very interested in the idea.
It’s nuts but I love you: One squirrel’s bizarre obsession with a garden statue of a dog
A squirrel’s fascination with a statue of a dog has brought hours of light entertainment to a Russian suburb.
The frisky rodent looked confused as to why the dog wasn’t moving and cannot seem to get its head around the fact that it is an ornament and not real.
The picture was taken by a photographer in the garden of his house just outside of Moscow.
Obsession: A red squirrel in a Moscow garden became fascinated with a statue of a dog when it couldn’t work out why it did not move like a real animal
Furry Love: The squirrel eventually became affectionate with the canine ornament and planted it with a kiss
The home-owner said: ‘The squirrel became fascinated by the dog; it was climbing all over the statue and seemed to be trying to work out what it was’.
He added: ‘At one point the squirrel looked directly into the statue’s face as if it was expecting a reaction’.
The squirrel enjoyed jumping all over the dog and going on its hind legs to get a closer look.
What are you: The photographer who captured the images said the squirrel looked directly into the statue’s face as if expecting a reaction
Fun times: The squirrel enjoyed jumping all over the dog and going on its hind legs to get a closer look
The furry animal even at one point appeared to kiss the statue, leaping from a set of stairs to latch on to dog and pucker up.
With similar looking coats of orange and brown hues, maybe the squirrel felt a deep sense of familiarity with the statue although it was more than five times its size.
Showing off its acrobatic manouevres, the friendly squirrel jumped on his new pal’s head and peered into its mouth, looking perilously close as if it was going to fall off at one point.
Tiring work: Exhausted after lots of acrobatics the squirrel perched on top of the dog to crunch on its nut
The squirrel managed to check out the statue all with a nut in its mouth which he crunched into when he had exhausted his inspection and needed to take a break.
Red squirrels are common throughout Eurasia but its numbers have decreased greatly because of the introduction of the eastern grey squirrel from North America.
They have a life expectancy of 3 years when living in the wild if they survive their first winter.