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They blew air into the sand from underneath the container.The team used very fine-grain sand in a container.Professor Detlef Lohse and his fellow researchers from the University of Twente (Netherlands) did some experiments to find out how dry quicksand behaves. Movies such as “Lawrence of Arabia” show entire vehicles swallowed by dry quicksand in the desert. It can be very dangerous, as air is less dense than the human body, so you keep sinking. RELATED 31+ Florida Turtles: ID Guide with Facts, Chart and Photos What Is Dry Quicksand?ĭry quicksand is sand with voids made of air gaps instead of water. The cylinder stopped more grains from falling around the man. They sucked out the grain inside the cylinder with an industrial vacuum. They then lowered a cylinder over him, which also sank. This made it harder and harder for him to breathe.įirefighters saved the man with a clever solution. By then, he had sunk up to his chest in the grain.Įvery time he let out a breath, more grain would fill the gap. It took a while for firefighters to figure out which of the eight silos he was in. This is what happened to a man who fell into a grain silo in Germany in 2002. These grains don’t even need to be sand to have this effect. Once the dry sand or other grains solidify again around you, they can restrict air flow to your lungs. This is because it behaves in much the same way that snow in an avalanche does. The Danger of Dry Quicksandĭry quicksand is much more dangerous than wet quicksand. Especially if you are wandering around on sand or mud at low tide, where fine particles, salt, and sand mix. You are much more likely to find quicksand near bodies of water. Sometimes there are large air gaps in desert sand, but this isn’t common.Īfter a sandstorm, you are most likely to encounter desert quicksand. In pools of water where drainage is reduced by an underlying layer of non-permeable material, like clay.ĭespite what cartoons might have you thinking, deserts are not likely places to find quicksand.Springs that rise up in sand on beaches and riverbanks at low tide can cause quicksand. Near upwardly moving water, such as underground springs.

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RELATED How To Make A Camping Tent From Scratch: An Emergency Shelter, or For Fun Where Is Quicksand Found? This means that if the sand is agitated-by movement, upward motion of water, or vibration-the fragile structure collapses and becomes fluid.Īll that’s holding the sand grains together is friction, and when movement destabilizes the sand grains, quicksand is the result. In quicksand, these voids comprise from 30 to 70% of the mass of the sand. Sand normally has voids that make up 25 to 30% of its mass. It looks normal and safe to step on, but it is not. Quicksand is sand that has larger than normal gaps between the grains. Movement caused by people, earthquakes, or vibrations turns the quicksand from a solid to a liquid very quickly. When mixed with water or air, this creates gaps, called voids, in the sand. Quicksand is found in areas where there is fine sediment, like sand or silt. It’s the stuff of movies and childhood tales, but is it real? Where is quicksand found, and how can you find it? Use slow and controlled movements to try to loosen yourself from the sand.Picture this: an adventurer venturing into the unknown, the ground suddenly shifting beneath their feet as they sink into a perilous trap. If your foot does get stuck it's important not to panic. Experienced hikers say common spots to find quicksand are in riverbeds. Osmun said he has no plans to hike the subway route again. It was just a freak accident that my leg hit this hole of sand,' Osmun said. 'I really wouldn't change anything or go back and change anything or do anything differently.

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Osmun suffered minor muscle damage, but expects to make a full recovery. Quicksand can be tough to spot, sometimes appearing dry on the surface even though it is wet underneath. It forms after an area with a lot of sand is saturated with water making liquid mud that can trap anyone who steps in it. Zion has experienced a wet winter this year creating the conditions for potentially dangerous quicksand.įor years, hikers have been warned to keep an eye out for quicksand in Zion National Park. The National Park Service said freezing temperatures, snow and cold run-off can turn easy hikes into treacherous ones. It wasn't until Sunday that Utah rescuers, facing difficult terrain and stormy weather, repelled down 100 feet of cable to lift Osmun to safety. They were forced to spend the night when a winter storm brought in four inches of additional snow. It was probably one of the worst pains I've ever felt,' he said.

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'One guy scraping sand away, they were able to free my leg.

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