Fjords.
fjord
That would be a "fjord," which is a long, narrow sea inlet with steep sides or cliffs, typically formed by glacial erosion. In southern Ireland, these fjords are often a result of Ice Age glaciers shaping the landscape.
I firth is similar to a fjord but located in scotland. A fjord is a steep inlet created by glaciers and are only found in Norway. The Norwegians call them fjords, the Scots call them Firths.
A 'hanging valley' is a valley which is cut across by a river flowing in a deeper valley.
One example are the Western Norway Fjords.
Well, darling, that's what we call a gorge. It's like a fancy word for a deep crack in the earth with cliffs on both sides. So next time you find yourself in a tight spot between two towering walls, just remember you're in a gorge.
Well, ravines are sometimes called valleys, and mountains can be called hills or heaps of earth... but they are usually called mountains and ravines. You could also call them landforms, or even landmarks if they are sufficiently unique.
fault
A rille
We used to call that a toboggan run!
Canyon
A crevice.