Hranice Abyss

Hranice Abyss is the deepest flooded pit cave in the world. It is a karst sinkhole near the town of Hranice, Czech Republic. The greatest confirmed depth is 519.5 m (1,704 ft), of which 450 m (1,476 ft) is underwater. In 2020, a scientific expedition to the cave revealed that part of the system apparently reaches 1,000 metres (3,300 ft) deep, albeit with the lowest reaches sediment-filled. Analysis of the water found carbon and helium isotopes which implied that the cave has been formed by acidic waters, heated by the mantle, welling up from below.

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Wikimedia, Wikidata
doline, cave, Czech Republic, 

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Location: 49.532, 17.7508, KML, Cluster Map, Maps,
23 places

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  Czech Bunker ⓘ
  

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  Russian Bunker ⓘ
  

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  U bunkrů ⓘ
  

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  Hranice Abyss ⓘ
  abyss in the Czech Republic

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  Pouťová jeskyně ⓘ
  cave in Štramberk, Czech Republic

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  Šipka ⓘ
  cave in Czech Republic

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  Slámova sluj ⓘ
  cave in Štramberk

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  Zbrasov aragonite caves ⓘ
  cave in the Czech Republic

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  Botanic garden and arboretum in Štramberk ⓘ
  

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  Former mine Petrova skála ⓘ
  

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  Jadran ⓘ
  pond in Osek nad Bečvou, Czech Republic

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  Kamenolom Nejdek ⓘ
  

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  Lom v Kozlově ⓘ
  

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  Lom V Zátočině ⓘ
  

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  Quarry in Hranice ⓘ
  

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  U lomu ⓘ
  mountain

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  Zaniklý lom Ústí ⓘ
  

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  tunel Prchalov ⓘ
  

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  Slavíčský tunel ⓘ
  

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  Smilovský tunnel I ⓘ
  

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  Smilovský tunnel II ⓘ
  

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  Tunel Jívovský ⓘ
  railway tunnel in Czech Republic

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  Wildlife crossing Dolní Újezd ⓘ
  wildlife crossing and highway tunnel, Dolní Újezd, Czechia

2003-01-01T00:00:00Z

2003-01-01T00:00:00Z

2003 Zbrasov aragonite caves

1840-01-01T00:00:00Z

1895-01-01T00:00:00Z

1840 — 1895 Slavíčský tunel

1872-01-01T00:00:00Z

1872-01-01T00:00:00Z

1872 Smilovský tunnel I

1872-01-01T00:00:00Z

1872-01-01T00:00:00Z

1872 Smilovský tunnel II

1872-01-01T00:00:00Z

1872-01-01T00:00:00Z

1872 Tunel Jívovský

1999-01-01T00:00:00Z

1999-01-01T00:00:00Z

1999 Wildlife crossing Dolní Újezd

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Frameless

Hranicka propast 1

Hranicka propast 2

Hranice Gouffre 40434

HranickaPropast

Hranická propast s můstkem

Hranická propast

Hůrka u Hranic (28)

Hůrka u Hranic (34)

Hůrka u Hranic (31)

Hůrka u Hranic (29)

Type	Subtype	Date	Description	Notes	Source
site	bunker		Czech Bunker	bunker	Wikidata
site	bunker		Russian Bunker	bunker	Wikidata
site	bunker		U bunkrů	bunker	Wikidata
site	cave		Hranice Abyss	doline, cave	Wikidata
site	cave		Pouťová jeskyně	pit cave, cave	Wikidata
site	cave		Šipka	cave	Wikidata
site	cave		Slámova sluj	cave	Wikidata
site	cave	2003	Zbrasov aragonite caves	national natural monument, show cave, protected area	Wikidata
site	mine		Botanic garden and arboretum in Štramberk	limestone quarry, arboretum, botanical garden	Wikidata
site	mine		Former mine Petrova skála	abandoned mine, quarry	Wikidata
site	mine		Jadran	artificial pond, quarry lake	Wikidata
site	mine		Kamenolom Nejdek	quarry	Wikidata
site	mine		Lom v Kozlově	former building or structure, quarry	Wikidata
site	mine		Lom V Zátočině	quarry	Wikidata
site	mine		Quarry in Hranice	quarry	Wikidata
site	mine		U lomu	quarry, hill	Wikidata
site	mine		Zaniklý lom Ústí	quarry	Wikidata
site	tunnel		tunel Prchalov	road tunnel	Wikidata
site	tunnel	1840	Slavíčský tunel	railway tunnel	Wikidata
site	tunnel	1872	Smilovský tunnel I	railway tunnel	Wikidata
site	tunnel	1872	Smilovský tunnel II	railway tunnel	Wikidata
site	tunnel	1872	Tunel Jívovský	railway tunnel	Wikidata
site	tunnel	1999	Wildlife crossing Dolní Újezd	bridge, tunnel	Wikidata
commons	image		Hranicka propast 1		Commons
commons	image		Hranicka propast 2		Commons
commons	image		Hranice Gouffre 40434		Commons
commons	image		HranickaPropast		Commons
commons	image		Hranická propast s můstkem		Commons
commons	image		Hranická propast		Commons
commons	image		Hůrka u Hranic (28)		Commons
commons	image		Hůrka u Hranic (34)		Commons
commons	image		Hůrka u Hranic (31)		Commons
commons	image		Hůrka u Hranic (29)		Commons