IPA: /ˈɡræbən/
KK: /ˈgræbən/
A long, narrow area of land that is lower than the surrounding land, often formed by geological processes and bounded by faults.
The scientists studied the graben to understand the geological history of the region.
Graben comes from the German word 'graben', meaning to dig or to ditch. It refers specifically to a geological term describing a block of the earth's crust that has dropped between two fault lines, creating a valley.
Think of the German word 'graben' meaning to dig, which helps you remember that a graben is a valley formed by the earth being dug down between faults.