a relatively long, narrow area of the earth's crust that has subsided between two bordering faults
Origin of grabenGer, a ditch from Old High German grabo from graban, to dig: see grave
A usually elongated depression between geologic faults.
Origin of grabenGerman Graben from Middle High German grabe trench from Old High German grabo from graban to dig ; see ghrebh-2 in Indo-European roots.
(plural grabens or graben)