South Korea Lava tube
Gimnyeong Cave, Manjanggul Cave
16 °C inside, all year.
AhmadElq · CC BY-SA 4.0
The descent
The entrance, at 86 m.
The real relief above Gimnyeong Cave, Manjanggul Cave, measured on the Copernicus model every 30 m, and the cave going down at the same vertical scale.
The depth is the one published by those who explored it; the shape of the galleries is a sketch, not a survey. No depth has been published for this cave yet.
86m
Entrance altitude
from the 30 m relief model
16°C
Inside, all year
the yearly average outside, at the entrance
37m
Rock above
the highest point within 1.5 km
Inside and outside
16 °C inside, all year.
Deep inside, a cave keeps the average temperature of the year outside: about 16 °C here, in January and in August. In August the afternoon reaches 28 °C at the entrance, 12 °C warmer than inside: take a jacket. The best months to escape the heat are in August.
- 8°5°Jan
- 9°6°Feb
- 12°8°Mar
- 16°11°Apr
- 19°15°May
- 22°19°Jun
- 26°24°Jul
- 28°25°Aug
- 25°22°Sep
- 20°17°Oct
- 16°12°Nov
- 10°7°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.
Lavea tube cave area in Jeju city, Jeju-do, South Korea
Gimnyeong Cave, Manjanggul Cave is a lava tube in South Korea. The entrance is at 86 m. It has the shape of a lava tube.
Getting there.
- Wild cave: only with caving equipmentNo paths or lights inside. Go only with a caving club or a qualified guide.
- Ponggae-dongnearest town · 17 km in a straight line
- Jeju International Airport (CJU)nearest airport with scheduled flights · 26 km in a straight lineCar hire at CJU airport (Jeju City)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.
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.
- 3other cave entrances within 3 km만장굴 제2입구, 만장굴, 궤네기굴
- 2marked hiking routes within 3 km올레길 19코스
- 4car parks within 2 km
- 12bus stops within 2 km
- 1campsites within 8 km
- 46hotels and guesthouses within 8 km제주해오름리조트, 사조마을 제주 콘도미니엄, 김녕민박 and 43 more
- 9restaurants and cafés within 3 km
- springs within 2 km
- sinkholes within 3 km
- caving clubs and spots within 15 km
- viewpoints within 3 km
- climbing crags within 3 km
- named waterfalls within 4 km
- information boards and visitor centres within 3 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
- Ponggae-dong17 km in a straight line
- Sanji22 km in a straight line
- Ido-dong23 km in a straight line
- Jeju City23 km in a straight line
- Ara-dong23 km in a straight line
- Ora-dong25 km in a straight line
In our other atlases
What else is around Gimnyeong Cave, Manjanggul Cave.
The river at the entrance, the waterfalls, the lakes, the mountains and volcanoes above, the canyons, beaches and islands nearby — from our other atlases.
Peakyas2 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 | 8 | 9 | 12 | 16 | 19 | 22 | 26 | 28 | 25 | 20 | 16 | 10 |
| Afternoon | 8 | 9 | 12 | 16 | 19 | 22 | 26 | 28 | 25 | 20 | 16 | 10 |
| Night | 5 | 6 | 8 | 11 | 15 | 19 | 24 | 25 | 22 | 17 | 12 | 7 |
| Rain (mm) | 52 | 66 | 94 | 144 | 147 | 195 | 232 | 268 | 206 | 94 | 76 | 56 |
| Rainy days | 8 | 8 | 10 | 10 | 11 | 13 | 17 | 18 | 11 | 7 | 8 | 8 |
| Sun hours/day | 2.7 | 3.9 | 5.4 | 5.9 | 5.8 | 4.3 | 5.0 | 6.0 | 5.1 | 5.7 | 4.1 | 2.7 |
| Snow on the ground (cm) | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Afternoon | Afternoon | Night | Rain (mm) | Sun hours/day | |
|---|---|---|---|---|---|
| Jan | 8 | 8 | 5 | 52 | 2.7 |
| Feb | 9 | 9 | 6 | 66 | 3.9 |
| Mar | 12 | 12 | 8 | 94 | 5.4 |
| Apr | 16 | 16 | 11 | 144 | 5.9 |
| May | 19 | 19 | 15 | 147 | 5.8 |
| Jun | 22 | 22 | 19 | 195 | 4.3 |
| Jul | 26 | 26 | 24 | 232 | 5.0 |
| Aug | 28 | 28 | 25 | 268 | 6.0 |
| Sep | 25 | 25 | 22 | 206 | 5.1 |
| Oct | 20 | 20 | 17 | 94 | 5.7 |
| Nov | 16 | 16 | 12 | 76 | 4.1 |
| Dec | 10 | 10 | 7 | 56 | 2.7 |
Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the altitude of the entrance (86 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 | 205% | 82% | 69% | 48% | 74% | 115% | 111% | 68% | 198% | 38% | 27% | 57% |
| 2021 | 124% | 105% | 150% | 47% | 90% | 88% | 143% | 125% | 129% | 30% | 96% | 25% |
| 2022 | 29% | 20% | 141% | 83% | 9% | 174% | 116% | 29% | 108% | 36% | 50% | 24% |
| 2023 | 83% | 80% | 38% | 49% | 100% | 61% | 106% | 57% | 55% | 13% | 91% | 146% |
| 2024 | 150% | 298% | 140% | 93% | 92% | 140% | 86% | 45% | 124% | 180% | 247% | 15% |
| 2025 | 40% | 104% | 72% | 73% | 124% | 93% | 87% | 57% | 107% | 160% | 82% | 28% |
130% or more: wet month 70% or less: dry month
Caves nearby.
Gimnyeong Cave, Manjanggul Cave
South Korea
- —Depth
- —Galleries
- 86 mEntrance altitude
- 16 °CInside, all year
Yongcheon Cave
South Korea · 2 km
- —Depth
- —Galleries
- 42 mEntrance altitude
- 16 °CInside, all year
Where these figures come from
| Name, type, published depth and length, visitors | Wikidata (Q6750353) · 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 |
| 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
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers, canyons, caves, dark skies, viewpoints, birdwatching or forests?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.
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