The cave contains a total of four distinct waterfalls within its mapped sections.
It is part of the larger Hwanseon Cave Area, which includes the nearby Gwaneumgul Cave.
The cavern is estimated to have formed over several hundred million years.
Subterranean streams within the cave eventually feed into the Samcheok region's watershed.
The cave floor is home to rare troglobitic species, including cave-dwelling shrimp and spiders.
Hwanseongul Cave is the largest limestone cavern in South Korea, spanning approximately 6.2 kilometers in total length. It is situated within the Daedeoksan Mountain range and features a complex network of multi-level passages. The cave is characterized by an array of unique formations, including various stalactites, stalagmites, and underground waterfalls. A monorail system assists visitors in traversing the steep elevation gain required to reach the main entrance from the base. The interior maintains a consistent temperature of around 10 to 15 degrees Celsius throughout the year. It was designated a Natural Monument of South Korea in 1966 due to its geological significance and scale. Portions of the cave are open to the public via constructed walkways and bridges. The cavern houses several underground lakes and distinct ecological zones.
The main cavern bridge provides a panoramic perspective of the large stalactite chambers.
Wear a light jacket regardless of external temperature, as the cave remains chilly year-round.
Use the monorail to save energy, as the walk to the cave entrance involves a steep incline.
Wear shoes with high-grip soles as walkways can be slippery due to constant dripping water.
Attempting to climb the path without using the monorail if you have limited mobility, as the ascent is physically taxing.
Closed on the 18th of every month (or the following weekday if the 18th is a holiday).
Do not touch limestone formations to prevent oil damage; stay strictly on designated walkways.
