Sinkhole - Wikipedia
A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer.
What is a sinkhole? | U.S. Geological Survey - USGS.gov
Sinkholes are most common in what geologists call, “ karst terrain.” These are regions where the types of rock below the land surface can naturally be dissolved by groundwater circulating …
Sinkhole Facts - Science Notes and Projects
Mar 12, 2025 · Get sinkhole facts in geology. Learn about the different types of sinkholes, how they form, and how to repair or escape from one.
What Causes Sinkholes? | Formation, Water, Limestone, & Facts
Dec 15, 2025 · Sinkholes are depressions that form when the underlying limestone bedrock is eroded or dissolved by groundwater.
Sinkholes: What They Are, How They Form, And Their Potential …
Mar 9, 2025 · Sinkholes are sudden depressions or holes that appear on the Earth's surface when the ground collapses causing significant damage to infrastructure and serious risks to human …
Sinkhole - National Geographic Society
Jul 3, 2024 · Sinkholes vary from shallow holes about one-meter (three-feet) deep, to pits more than 50 meters (165 feet) deep. Water can drain through a sinkhole into an underground …
Sinkholes - American Geosciences Institute
Most sinkholes occur in places where water can dissolve the rock below the surface, for example where the bedrock is limestone, salt, or gypsum. They can collapse very quickly, or slump …
What causes sinkholes, and why are they so dangerous?
Dec 4, 2024 · The search has revived national concern about the unpredictability of sinkholes. Here's what you should know about sinkholes, how they're created and where they can happen.
Sinkholes and Their Hazards - InterNACHI
This article explains what sinkholes are, why they are dangerous, and how to detect them before they form.
What Are Sinkholes and How Do They Form in Our Landscape
Discover the fascinating world of sinkholes: what they are, how they form, and their impact on our landscape!