The name 'Gossi' refers to the Go family, who hid inside the cave to escape invaders during the Imjin War.
Gossi Cave is estimated to be approximately 400 million years old, dating back to the Ordovician period.
The cave features rare 'cave coral' formations that grow in areas where water seepage is consistent.
It is home to over 40 species of cave-dwelling organisms, including the Gossi Cave harvestman and various types of bats.
The cave contains a total of four underground lakes that fluctuate in water level depending on seasonal rainfall.
The interior environment is so confined in certain sections that visitors must wear provided safety helmets to navigate low-hanging rock formations.
Gossi Cave is a 6.3-kilometer-long natural limestone cave system situated along the Namhan River in Yeongwol, with approximately 1.2 kilometers open to the public. It is designated as Natural Monument No. 219 by the South Korean government due to its significant geological value. The cave contains a variety of stalactites, stalagmites, and cave pearls formed over millions of years. Visitors traverse the interior via a series of metal walkways, stairs, and bridges that wind through narrow passages and high-ceilinged chambers. The cave maintains a constant internal temperature throughout the year. It holds historical significance, having served as a refuge for the Go clan during the Imjin War in the late 16th century. The site is managed under the umbrella of the Yeongwol Paleozoic Era Geopark.
The entrance bridge crossing the Namhan River provides a clear view of the cliff-side cave mouth.
Wear comfortable, non-slip footwear as the interior metal walkways can be damp and slippery.
Bring a light jacket, as the internal temperature remains cool even during the peak of summer.
Remove bulky backpacks before entering, as some passages are extremely narrow and require stooping.
Attempting to climb off the designated paths or bringing food and drinks inside the cave.
Closed every Monday for maintenance and cleaning.
Hard hats provided at the entrance are mandatory for safety; touching rock formations is strictly prohibited to preserve delicate ecosystems.
