has part
elevation
plateau
depression
high-elevation mountain
mid-elevation mountain
UNEP-WCMC class 7 mountain
https://orcid.org/0000-0002-7556-2097
This is an odd class, as it's not a mountain in itself but is used to classify elevated basins and plateaus surrounded by mountains.
An elevated inner basin or plateau surrounded by mountains, but not - itself - a mountain.