Covão dos Conchos is an
artificial
Artificiality (the state of being artificial or manmade) is the state of being the product of intentional human manufacture, rather than occurring naturally through processes not involving or requiring human activity.
Connotations
Artificiality ...
lake
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...
in the
Serra da Estrela
Serra da Estrela () is the highest mountain range in Continental Portugal. Together with the Serra da Lousã it is the westernmost constituent range of the Sistema Central and also one of the highest in the system. It includes mainland Portugal's ...
mountains in
Portugal
Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ...
that is famous for its
Bell-mouth spillway.
The spillway was built in 1955 with the aim of diverting water from Ribeira das Naves to Lagoa Comprida. It is a part of a hydro-electric dam system of Serra da Estrela. This sci-fi-looking spillway was little-known until photos of the hole
went viral
Viral phenomena or viral sensation are objects or patterns that are able to replicate themselves or convert other objects into copies of themselves when these objects are exposed to them. Analogous to the way in which viruses propagate, the ter ...
in 2016. Over the last 60 years moss and foliage has grown onto the mouth of the funnel, adding to its ethereal allure. It has a height of 4.6 meters and has a circumference of 48 meters. The tunnel that collects the water is 1,519 meters long.
References
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Reservoirs in Portugal
Serra da Estrela