Plizio Visual Lab
Uljin Geopark
Uljin Geopark is a significant part of the Gyeongbuk Geopark, renowned for its extraordinary geological formations along South Korea's eastern coastline. The park's centerpiece is Seongnyugul Cave, a limestone cave estimated to be over 250 million years old, featuring spectacular stalactites and stalagmites. The cave spans 870 meters and is officially registered as Natural Monument No. 155. Additionally, the geopark encompasses the Bul-yeong Valley, famous for its deep canyons and crystal-clear rivers flowing through metamorphic rock layers. This valley provides a direct look into the tectonic shifts of the peninsula over millions of years. The park serves as an open-air museum for geology and biology, hosting rare lichens and ferns. It plays a vital role in preserving Korea's geological heritage while promoting sustainable geotourism in the region.
- Location: South Korea
- Top sights: Pokpungsokeuroseteujang · Mangyang Beach · Sandol Baptist Church
- Nearby: Susan-ri (4 km)
Best time to visit & climate
The most pleasant time to visit is May, Jun, Oct.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 1 | 3 | 6 | 11 | 16 | 20 | 23 | 25 | 21 | 16 | 9 | 3 |
| Rain mm | 34 | 40 | 52 | 81 | 73 | 112 | 243 | 223 | 172 | 78 | 49 | 31 |
📋 Practical info
Geography
Facts
- Seongnyugul Cave length: 870 meters
- Geological age: approx. 250 million years
- Natural Monument No. 155 since 1963
- Bul-yeong Valley length: 15 kilometers
- Home to rare Metasequoia fossils
- Part of the Gyeongbuk East Coast Geopark
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Sights in the town Uljin Geopark (3)
Sights nearby
Frequently asked questions
What makes Uljin Geopark special?
Is Seongnyugul Cave open year-round?
What clothing is recommended for visiting the caves?
Are there dining options near the geopark?
How much time should I plan for the geopark?
Uljin Geopark: where is it located?
Uljin Geopark: what is there to see?
Uljin Geopark: when is the best time to visit?
Uljin Geopark: why is it worth visiting?


























