butte
An isolated hill with steep sides is known as a butte. It is a narrow, flat-topped hill with steep, vertical sides formed by erosion of softer rock layers surrounding harder rock layers. Buttes are common in arid regions where erosion has sculpted the landscape over time.
Ravine: A deep, narrow gorge with steep sides formed by erosion from a stream or river.
A rift valley has steep narrow sides and a flat floor. A rift valley forms where the Earth's crust is spreading or splitting apart.
A deep narrow pass between steep heights is called a ravine or a gorge. These geological formations are typically formed by the erosive forces of water, such as rivers or glaciers, cutting through the land over time to create a narrow, steep-sided valley.
The word you are looking for is "trench." Trenches are long and narrow depressions in the seafloor characterized by very steep sides.
A Butte
scarp
An isolated hill with steep sides is known as a butte. It is a narrow, flat-topped hill with steep, vertical sides formed by erosion of softer rock layers surrounding harder rock layers. Buttes are common in arid regions where erosion has sculpted the landscape over time.
Ravine: A deep, narrow gorge with steep sides formed by erosion from a stream or river.
By definition, a narrow chasm with steep cliff walls is a canyon. Exceptionally narrow canyons are called "slot canyons".
A deep valley with steep sides would be called a gorge or canyon.
That was a very steep hill!
something that is steep
A hill has steep sides because of how the hill formed it formed with steep sides. I don't agree. Hills have steep sides because of the Earth's plates. When the plates push against each other, they sometimes push up, creating a hill or a mountain. Whether the hill has steep sides or not depends on the factors such as weathering and erosion, and on quite simply how it forms.
The bright green hill was very,very steep therefore i didn't run down the hill.
You can save gas driving a steep hill by driving the car at a lower RPM.
A fjord.