Czechia Cave
Hranice Abyss
520 m below the entrance.
Jiří Komárek · CC BY-SA 4.0
The descent
520 metres down, to scale.
The real relief above Hranice Abyss, measured on the Copernicus model every 30 m, and the cave going down at the same vertical scale.
Empire State Building (443 m) would fit upside down 1.2 times.
The depth is the one published by those who explored it; the shape of the galleries is a sketch, not a survey.
520m
Depth
published (Wikidata)
323m
Entrance altitude
from the 30 m relief model
9°C
Inside, all year
the yearly average outside, at the entrance
77m
Rock above
the highest point within 1.5 km
Inside and outside
9 °C inside, all year.
Deep inside, a cave keeps the average temperature of the year outside: about 9 °C here, in January and in August. In July the afternoon reaches 26 °C at the entrance, 17 °C warmer than inside: take a jacket. The wettest months are from May to July: water rises fast underground, so never go in without a guide after heavy rain.
- 0°-6°Jan
- 2°-5°Feb
- 7°-2°Mar
- 14°3°Apr
- 19°8°May
- 23°13°Jun
- 26°15°Jul
- 26°14°Aug
- 20°9°Sep
- 13°4°Oct
- 7°1°Nov
- 1°-4°Dec
Outside: afternoon and night averages for 1991–2020 (NASA POWER) brought to the altitude of the entrance. Inside: the yearly average, which deep parts of a cave keep. Near the entrance it follows the weather a little.
Abyss in the Czech Republic
Hranice Abyss is a cave in Czechia. It goes down 520 m below the entrance. The entrance is at 323 m. It has an underground river. It lies within Hůrka u Hranic.
Getting there.
- No public accessProtected for science or for its art. Look for a replica or a visitor centre nearby.
- Hranicenearest town · 2.1 km in a straight line
- Viewpointsnearest viewpoint · 0.0 km from the entrance
- Leoš Janáček Airport Ostrava (OSR)nearest airport with scheduled flights · 32 km in a straight lineCar hire at OSR airport (Mošnov)Discover Cars · sponsored link↗
Plan the visit
Guided tours, a bed nearby, a car.
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
The water
The Bečva runs highest from March to July and in September.
The Bečva carries about 11 m³/s on average here. It runs highest from March to July and in September.
- 11 m³/sJan
- 15 m³/sFeb
- 22 m³/sMar
- 22 m³/sApr
- 25 m³/sMay
- 22 m³/sJun
- 20 m³/sJul
- 17 m³/sAug
- 18 m³/sSep
- 17 m³/sOct
- 12 m³/sNov
- 6.0 m³/sDec
From about 6.0 m³/s in the lowest month to 25 m³/s in the highest. Its basin above this point covers 1,262 km².
Follow the Bečva from source to mouth on Riveryas
Estimate: long-term flow from the HydroATLAS model (WaterGAP, 1971–2000) shaped by the monthly rain, snow and temperature of the area (NASA POWER). Dams change it. Not a forecast.
From above.
The ground above the cave, with the relief shaded, the line of the section and what people have mapped around the entrance.
N
1.5 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 6.0 × 6.0 km, north up. The line is the section above. Points © OpenStreetMap contributors.
Around the entrance.
- 4other cave entrances within 3 kmČernotínské jeskyně, Jeskyně v Temných skalách and 2 more
- 6springs within 2 kmJavorová studánka, Galašův pramen, Kropáčův pramen and 3 more
- 4viewpoints within 3 kmVyhlídka u sv. Jana, Zřícenina hradu Svrčov and 2 more
- 11marked hiking routes within 3 km[Z] Hrabůvka (rozc., bus) - Hranice (nám.), [Č] Hranice - Lipník n. Bečvou, [Ž] Hranice (žst.) - Zbrašov and 8 more
- 41car parks within 2 km
- 58information boards and visitor centres within 3 km
- 35bus stops within 2 km
- 1campsites within 8 kmAutocamping
- 6hotels and guesthouses within 8 kmPension Ostravanka, Hotel Centrum, Penzion Franz Josef and 3 more
- 25restaurants and cafés within 3 km
- sinkholes within 3 km
- caving clubs and spots within 15 km
- climbing crags within 3 km
- named waterfalls within 4 km
Counted in OpenStreetMap, the map anyone can edit, around the entrance. A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
Towns nearby
- Hranice2.1 km in a straight line
- Kelč7.6 km in a straight line
- Bělotín7.7 km in a straight line
- Hustopeče Nad Bečvou8.6 km in a straight line
- Lipník nad Bečvou12 km in a straight line
- Lešná13 km in a straight line
- Potštát14 km in a straight line
- Jeseník nad Odrou14 km in a straight line
In our other atlases
What else is around Hranice Abyss.
The river at the entrance, the waterfalls, the lakes, the mountains and volcanoes above, the canyons, beaches and islands nearby — from our other atlases.
Cascadyas1 waterfalls within 5 km
Peakyas8 mountains within 10 kmFigures from the sister sites' databases (Wikidata, HydroATLAS, GeoNames, NOAA, OpenStreetMap). Links open when each site is online.
Month by month
The weather outside, at the entrance.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon | 0 | 2 | 7 | 14 | 19 | 23 | 26 | 26 | 20 | 13 | 7 | 1 |
| Afternoon | 0 | 2 | 7 | 14 | 19 | 23 | 26 | 26 | 20 | 13 | 7 | 1 |
| Night | -6 | -5 | -2 | 3 | 8 | 13 | 15 | 14 | 9 | 4 | 1 | -4 |
| Rain (mm) | 45 | 40 | 43 | 43 | 79 | 82 | 82 | 72 | 69 | 54 | 45 | 45 |
| Rainy days | 10 | 10 | 11 | 9 | 14 | 14 | 15 | 11 | 11 | 9 | 10 | 11 |
| Sun hours/day | 1.3 | 2.8 | 4.4 | 6.4 | 6.8 | 7.2 | 7.3 | 7.0 | 5.2 | 3.2 | 1.2 | 0.9 |
| Snow on the ground (cm) | 19 | 17 | 10 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 7 | 17 |
| Afternoon | Afternoon | Night | Rain (mm) | Sun hours/day | |
|---|---|---|---|---|---|
| Jan | 0 | 0 | -6 | 45 | 1.3 |
| Feb | 2 | 2 | -5 | 40 | 2.8 |
| Mar | 7 | 7 | -2 | 43 | 4.4 |
| Apr | 14 | 14 | 3 | 43 | 6.4 |
| May | 19 | 19 | 8 | 79 | 6.8 |
| Jun | 23 | 23 | 13 | 82 | 7.2 |
| Jul | 26 | 26 | 15 | 82 | 7.3 |
| Aug | 26 | 26 | 14 | 72 | 7.0 |
| Sep | 20 | 20 | 9 | 69 | 5.2 |
| Oct | 13 | 13 | 4 | 54 | 3.2 |
| Nov | 7 | 7 | 1 | 45 | 1.2 |
| Dec | 1 | 1 | -4 | 45 | 0.9 |
Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the altitude of the entrance (323 m) with the standard lapse rate. Not a forecast.
Photographs
Inside and around.
Recent years
Wet years, dry years.
Rain of each month as a share of the 1991–2020 average. A dry year means a lower river and hotter rock; a wet one, more water in the gorge.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 55% | 161% | 79% | 21% | 129% | 202% | 97% | 138% | 165% | 278% | 62% | 106% |
| 2021 | 99% | 115% | 70% | 113% | 126% | 56% | 87% | 211% | 47% | 35% | 123% | 88% |
| 2022 | 71% | 86% | 50% | 119% | 74% | 101% | 107% | 124% | 136% | 34% | 45% | 145% |
| 2023 | 119% | 82% | 68% | 144% | 93% | 68% | 81% | 182% | 40% | 113% | 185% | 166% |
| 2024 | 141% | 143% | 93% | 140% | 105% | 140% | 67% | 56% | 290% | 74% | 67% | 58% |
| 2025 | 79% | 27% | 101% | 82% | 82% | 83% | 146% | 55% | 145% | 91% | 159% | 38% |
130% or more: wet month 70% or less: dry month
Caves nearby.
Hranice Abyss
Czechia
- 520 mDepth
- —Galleries
- 323 mEntrance altitude
- 9 °CInside, all year
Zbrasov aragonite caves
Czechia · 0 km
- —Depth
- —Galleries
- 274 mEntrance altitude
- 9 °CInside, all year
Where these figures come from
| Name, type, published depth and length, visitors | Wikidata (Q1379640) · CC0 |
|---|---|
| The relief above, the entrance altitude, the section and the 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| River flow and basin | HydroATLAS / RiverATLAS v1.0 (Linke et al. 2019) · CC BY 4.0 |
| Climate | NASA POWER, 1991–2020 |
| Entrances, springs, sinkholes, opening hours and what is around | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Rivers, waterfalls, lakes, mountains, canyons, beaches and islands nearby | Coastya, Lakeyas, Peakyas, Cascadyas, Islandyas, Riveryas |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
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