By: Megan Narayan

What is a sinkhole?

A sinkhole is a cavity in the ground, especially in limestone formation, caused by water erosion.

What kind of bed rock is most likely to form sinkholes?

Limestone or other rocks that can be naturally dissolved by ground water.

Three Sinkholes in North Carolina?

Sinkhole in Durham North Carolina: 8 feet deep
Sinkhole in Wadesboro North Carolina: 25 feet deep
Sinkhole in Fayetteville North Carolina: 12 feet deep

Where is Limestone common in North Carolina?

Limestone is typical in the southern Coastal plain area.

What are the natural and human causes of sinkholes?

  • Natural Causes: Erosion of slightly soluble bedrock by percolating water, the collapse of a cave roof, dissolved by ground water.
  • Human Causes: Can be a result of drilling, construction, mining or even heavy traffic. Sometimes a broken

Where are the biggest sinkholes?

The biggest sinkholes are usually occur within Florida, Tennessee, Missouri, and Texas.