+A trench is a long, narrow depression in the ground, often deeper than it is wide. These formations can be natural, carved by [Erosion](/wiki/erosion), or human-made, serving as [Fortification](/wiki/fortification) in warfare or for drainage.
+## See also
+- [Warfare](/wiki/warfare)
+- [Ditch](/wiki/ditch)
+- [Geology](/wiki/geology)
... 1 more lines