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The Red Lake sinkhole in Croatia. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet.
Bering Sinkhole – natural limestone sinkhole in Texas used for prehistoric burials [4] Big Basin Prairie Preserve – St. Jacob's Well, Kansas, a water-filled sinkhole which lies in the Little Basin, and the Big Basin, a 1.5-kilometre-wide (1 mi) crater-like depression; Blue Hole (Castalia) – a fresh water pond located in Castalia, Erie ...
Sinkholes can swallow up cars, parts of roads and even houses. There's no national database that tracks sinkholes, but the U.S. Geological Survey conservatively estimates that they have cost on ...
A sinkhole is an area of ground that has no natural external surface drainage and can form when the ground below the land surface can no longer support the land above, according to the U.S ...
Quicksand forms when water saturates an area of loose sand, and the sand is agitated. When the water trapped in the batch of sand cannot escape, it creates liquefied soil that can no longer resist force. Quicksand can be formed by standing or (upwards) flowing underground water (as from an underground spring), or by earthquakes.
A sinkhole was discovered at on Wednesday evening near the base of Ocean City's Isle of Wight Bay Bridge, Route 90. Here's what caused it, plus more.
In all cases the chief conditions required for debris flow initiation include the presence of slopes steeper than about 25 degrees, the availability of abundant loose sediment, soil, or weathered rock, and sufficient water to bring this loose material to a state of almost complete saturation (with all the pore space filled). Debris flows can be ...
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 ...