Here's why:

* Deep and steep: Cirques are characterized by their steep, often near-vertical walls.

* Bowl-like depression: They are bowl-shaped depressions, often with a rounded headwall at the top.

* Glacier erosion: Cirques are formed by the erosive power of glaciers. The ice scours and plucks the bedrock, deepening and widening the depression over time.

Let me know if you'd like to learn more about glacial landforms!