Aerie

Example:Contrasting with an aerie, the floor of the cave served as a warm ground for the hiker to rest.

Definition:The surface of the earth, especially to describe a low and level area where one would not find an elevated dwelling or nesting site.

Example:The base of the mountain was lush with vegetation, in stark contrast to the barren aerie above.

Definition:The lowest or supporting part of an object, which is often opposite to the concept of an elevated or elevated structure like an aerie.