In geology, a graben (/ˈɡrɑːbən/) is a depressed block of the crust of a planet or moon, bordered by parallel normal faults.

Diagram illustrating the structural relationship between grabens and horsts
Infrared-enhanced satellite image of a graben in the Afar Depression

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This article uses material from the Wikipedia article Graben, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.