Depression (geology)

In geology, a depression is a landform sunken or depressed below the surrounding area.

Depressions form by various mechanisms.

Erosion-related: Collapse-related: Impact-related: Sedimentary-related: Structural or tectonic-related: Volcanism-related:

A watering hole is a natural depression where water collects and animals come to drink.
Karst closed depression with permanent lake Stymfalia , Peloponnese , Greece . Seasonal abundant precipitation drained by 3 sinkholes