canyon

In geomorphology, gorges are narrow valleys whose boundaries consist of steep slopes and walls. Gorge is the generic term for a number of geomorphological terms, some of which are only used regionally:

Particularly narrow gorges, in which the entire valley floor occupied by a stream are in Bairischen as gorge designated.
Gorges are in Alemannische as Tobel called.
The breakthrough valleys in the Jura - narrow, rocky gorges with comparatively low water gradients that connect the long valleys - are known as Klus .
Canyons are valleys with rocky flanks in plateaus with horizontal rock layers and, at least deep down, have the character of a gorge.

Notable valleys are to be delimited conceptually from gorges , which consistently have slopes as a boundary.

Emergence

Gorges caused by cutting of running waters in the underground. Here, deep erosion outweighs side erosion, so that no valley bottom can form. The slope erosion in the form of denudation processes is also rather low. The valley boundary thus consists of steep slopes and walls. The prerequisite for the creation of a ravine is correspondingly stable rock, especially plutonite and massive sedimentary rocks . On the lower Neckar down the Neckar, gorges can only be found from Binau , where the red sandstone reaches the surface and replaces the shell limestone as surface rock. If the deepening of the gorge exceeds the stability of the rock, landslides or rock falls occur .