plateau
Plateau, a large elevated piece of land that rises sharply above its surroundings and may be intersected by deep canyons.
There are no volcanoes in the Grand Canyon.
The Chaco canyon buildings were built by the ancestors of todays Pueblo people. They are often called the Ancestral Pueblo people. They are not cliff dwellings but on level ground and made of stone.
An upper stage in theatre typically refers to a raised platform or level that is located above the main stage. It is often used for scenes requiring elevated or balcony views, or for additional staging space for performers.
Table Top
The Canyon is 120 miles long, as much as 20 miles wide, and has a maximum depth of more than 800 feet. Its elevation at the rim is 3,500 feet above sea level. It is often claimed that Palo Duro Canyon is the second largest canyon in the United States. The largest, the Grand Canyon, is 277 miles long, 18 miles wide, and 6,000 ft. deep.
A river and erosion
It's often called a trench.
A canyon is a deep valley with steep sides often carved by a river or glacial activity, while a mountain is a landform that rises prominently above its surroundings with a peak or summit. Canyons are typically formed through erosion, while mountains are generally created through tectonic processes such as uplift and volcanic activity.
A raised platform on which plays are often performed
A canyon, or gorge, is a deep valley between cliffs often carved from the landscape by a river.