What Causes Sinkholes Anyway?

Internal erosion is silent and all around us.

Practical EngineeringYouTube

If you think it's bad getting stuck in traffic, just try getting stuck in a sinkhole, a horrible pit suddenly opening in the middle of the ground. How does this happen, and why does it seem to happen so often?

Practical Engineering digs deep to figure out what's going on in the ground when your local street suddenly disappears.

Internal erosion is a silent destroyer, making advantages of even the smallest underground leaks over time. You don't even see it coming until the ground shifts. While most sinkholes are small, some get downright massive.

Source: Practical Engineering

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