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Red Lake (Croatian: Crveno jezero) is a sinkhole containing a karst lake near the city of Imotski, Croatia. It is known for its numerous caves and remarkably high cliffs, reaching over 241 metres above normal water level and continuing below the water level. The total explored depth of this sinkhole is approximately 530 metres with a volume of roughly 25–30 million cubic metres,[2] thus it is the third largest sinkhole in the world.[2] Water drains out of the basin through underground waterways that descend below the level of the lake floor. The deepest known point of the lake is 4 metres below sea level.[1]

Red Lake
Red Lake
Coordinates	43°27′11″N 17°11′48″E
Type	former cave
Native name	Crveno Jezero (Croatian)
Basin countries	Croatia
Surface area	2.7 hectares (6.7 acres)[1]
Average depth	245 m (804 ft)
Max. depth	287 metres (942 ft)
Surface elevation	522 m (1,713 ft)
Settlements	Imotski

The sinkhole is named after the reddish-brown colour of the surrounding cliffs,[3] coloured by iron oxides.

Like the nearby Blue Lake, it is presumed that the lake emerged when the ceiling of a large cave hall collapsed.[3]

The lake is inhabited with endemic and endangered spotted minnow (Delminichthys adspersus)[4] and Imotski spined loach (Cobitis illyrica).[5][6] In the dry period of the year, this fish can be occasionally seen in surrounding springs, rivers and lakes, suggesting that there is an underground connection between Red Lake and other water bodies.[2]

At the 13th International Congress of Speleology in 2001, new findings were revealed. An inflow cave-shaped canal that measured approximately 30 × 30 metres was discovered in the eastern part of the lake at a depth of 175 metres.[7]

References

Sources

• Ozimec, Roman; Jalžić, Branko; Jelić, Dušan (December 2017). "Preliminarni izvještaj prirodoslovnih istraživanja u okviru Speleoronilačke ekspedicije Crveno jezero 2017" [The Preliminary Report on Natural Sciences Research During the Cave Diving Expedition to the Red Lake 2017] (PDF). Subterranea Croatica (in Croatian). 15 (2): 34–41. Retrieved 14 September 2018.

External links

• Media related to Red Lake, Croatia at Wikimedia Commons
• Stamp by Croatian post

На других языках

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[de] Roter See (Imotski)

Der Rote See (kroatisch Crveno jezero) ist eine der größten wassergefüllten Einsturzdolinen der Welt. Er liegt etwa 1,5 Kilometer westlich der Stadt Imotski in Kroatien. Sein Alter wird auf zwei Millionen Jahre geschätzt.

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- [en] Red Lake (Croatia)

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[es] Lago Rojo (Croacia)

El lago Rojo (en croata, Crveno jezero) es una especie de gran sumidero o agujero que contiene en su interior un lago kárstico, localizado a un 1,5 km al oeste de la ciudad de Imotski, en el condado de Split-Dalmacia, en el sur de Croacia. Su edad se estima en dos millones de años y es uno de los mayores pozos llenos de agua del mundo. El lago, de forma casi circular, tiene en superficie un diámetro de aproximadamente 200 m, con una profundidad de unos 287 m,[3] que fluctúa estacionalmente entre 30 y 50 m.

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[fr] Lac Rouge (Croatie)

Le lac Rouge (Crveno jezero en croate) est une doline de forme circulaire situé à côté de la ville d'Imotski, dans le comitat de Split-Dalmatie en Croatie. Le lac rouge présente de nombreuses grottes et des falaises remarquables de couleur rougeâtre en raison de la présence d'oxyde de fer, lui donnant son nom.

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[ru] Красное озеро (Хорватия)

Красное озеро (хорв. Crveno jezero) — пресноводное карстовое озеро около города Имотски в южной Хорватии. Как и соседнее Голубое озеро, лежит в глубокой карстовой воронке, сформированной в результате разрушения подземной пещеры[1]. Озеро получило своё название из-за красно-коричневого цвета окружающих его скал[1], окрашенных оксидом железа.

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