Try Fjord.
11-sided QuadrilateralAn 11-sided quadrilateral is called a hendecagon.
A five-sided polygon is called a pentagon.
A four sided figure is called a quadrilateral.
A twelve-sided polygon is called a dodecagon.
An arete is a mountain ridge that is steep sided and narrow along the ridge.
yes, the mid ocean ridges are a steep sided valley at the center of a mid ocean ridge
A canyon.
A steep-sided hill or mountain that stands alone and is usually smaller than a mesa is called a butte.
Try Fjord.
A hogback is a narrow, steep-sided ridge of land that has been geologically uplifted along a reverse fault. It typically has a steep slope on one side and a more gradual slope on the other. Hogbacks are common in areas with significant tectonic activity.
a deep, steep-sided, narrow river valley
A deep steep-sided valley formed by weathering and erosion is called a canyon. Canyons are typically formed by the action of rivers cutting through rock over long periods of time.
A deep steep-sided valley formed by weathering and erosion is called a canyon. Canyons are typically formed by the gradual wearing away of rock by water and wind over long periods of time, creating a deep, narrow valley with steep sides.
Such structure could be called a Canyon.
A steep-sided volcano formed entirely of ash and cinders is called a cinder cone volcano. These volcanoes are typically smaller in size compared to other types of volcanoes and are formed from explosive eruptions that eject mostly fragmented volcanic material.
ash and lava