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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. In geology, a depression is a landform sunken or depressed below the surrounding area. Depressions form by various mechanisms.
In anatomy, a fossa (/ ˈ f ɒ s ə /; [1] [2] pl.: fossae (/ ˈ f ɒ s iː / or / ˈ f ɒ s aɪ /); from Latin 'ditch, trench') is a depression or hollow, usually in a bone, such as the hypophyseal fossa (the depression in the sphenoid bone). [3] Some examples include: In the skull: Cranial fossa. Anterior cranial fossa; Middle cranial fossa ...
Kettle – Depression or hole in an outwash plain formed by retreating glaciers or draining floodwaters; Kīpuka – Area of land surrounded by one or more younger lava flows; Knoll – Small hill; Lacustrine plain – Lakes filled by sediment; Lagoon – Shallow body of water separated from a larger one by a narrow landform
The following terms are used to describe cavities that do not connect to other areas: A fossa (from the Latin "fossa", ditch or trench) is a depression or hollow, usually in a bone, such as the hypophyseal fossa, the depression in the sphenoid bone. [15] A meatus is a short canal that opens to another part of the body. [16]
The Red Lake sinkhole in Croatia. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet.
A siek in Bünde A siek in OstkilverIts steep sides are clearly recognisable. (Siek is a north German term for a wet depression, hollow or lowland area. It is mainly used to describe typical cultural landscape elements in eastern Westphalia, especially in the county of Lippe and in the region of Ravensberg Land.
A panhole is a depression or basin eroded into flat or gently sloping cohesive rock. [1] Similar terms for this feature are gnamma [ 2 ] or rock holes [ 3 ] (Australia), armchair hollows , weathering pans (or pits ) and solution pans (or pits ).
In human anatomy, the hilum (/ ˈ h aɪ l ə m /; pl.: hila), sometimes formerly called a hilus (/ ˈ h aɪ l ə s /; pl.: hili), is a depression or fissure where structures such as blood vessels and nerves enter an organ. Examples include: Hilum of kidney, admits the renal artery, vein, ureter, and nerves