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, …

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 …

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.

Dec 15, 2025 · Sinkholes are depressions that form when the underlying limestone bedrock is eroded or dissolved by groundwater.

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 …

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.

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 …

What’s a sinkhole? Sinkholes typically form when naturally acidic rainwater erodes underlying bedrock, creating damage beneath the surface.

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 …

This article aims to provide an in-depth analysis of key factors involved in the formation of sinkholes, ground subsidence, and terrain collapses—collectively known in English as sinkholes.