Danyang Ondaldonggul Cave

Discover the breathtaking beauty of Ondaldonggul Cave, a natural limestone wonder that has been forming for over 450 million years. Explore the vast underground cavern filled with stunning stalagmites and stalactites, and be enchanted by the fascinating ecosystem of small ponds inhabited by diverse wildlife. Don't miss the chance to experience the rich history of Ondalsanseong Fortress, while immersing yourself in the annual Ondal Culture Festival for a truly unforgettable adventure.

Welcome to Ondaldonggul Cave: A Journey Through Time

Welcome to Ondaldonggul Cave, a hidden gem nestled underground at the foot of Seongsan Mountain. This natural limestone cave is estimated to have started forming an astonishing 450 million years ago, creating a breathtaking underground wonder. Covering a vast area of 349,485 square meters, the cave stretches an impressive 760 meters in length. As you step into this enchanting world, prepare to be mesmerized by its stunning rock formations and captivating beauty.

Discover the Wonders of Nature

As you enter Ondaldonggul Cave through its two-meter-high mouth, you’ll find yourself immersed in a world of natural wonders. The cave’s interior boasts a height of 5 to 10 meters and a width of approximately 5 meters, creating a spacious and awe-inspiring setting. The cave’s unique stairway structure will guide you deeper into its depths, revealing a captivating display of stalagmites and stalactites. These formations, sculpted over millions of years, create a magical ambiance that will leave you in awe of nature’s artistic prowess.

One of the many remarkable features of Ondaldonggul Cave is its constant temperature. Whether you visit in the scorching summer or the chilly winter, the cave remains a comfortable 14 degrees Celsius in summer and 16 degrees Celsius in winter. This makes it a perfect destination for year-round exploration and a refreshing escape from extreme weather conditions.

Be prepared to be amazed by the underground water resources that abound within the cave. The cave river, flowing at the bottom of its floor, is a tranquil sight to behold. With a depth of 0.8 to 1 meter, it offers a serene atmosphere as you walk alongside its gentle currents. The cave also features over 40 small ponds, each teeming with a diverse array of living organisms, including fish and insects. This rich ecosystem adds a touch of life and color to the cave’s already captivating environment.

Explore Ondalsanseong Fortress and More

Adjacent to Ondaldonggul Cave, atop the mountain peak on the left, lies the historic Ondalsanseong Fortress. This ancient fortress, preserved in its original form for over 1,400 years, showcases the advanced building skills of the Goguryeo Era (37 BC-668 AD). As you wander through its ancient walls, you’ll be transported back in time, gaining insight into the rich history and architectural mastery of the past.

If you happen to visit in October, you’re in for a special treat. The annual Ondal Culture Festival takes place around Ondaldonggul Cave and Ondalsanseong Fortress, commemorating the legendary love story between General Ondal and Princess Pyeonggang. This vibrant festival showcases traditional performances, exhibitions, and cultural experiences that will captivate your senses and deepen your appreciation for the local heritage.

Don’t miss the chance to explore the nearby theme park and Jangseung Park, where you can immerse yourself in the charm of Korean traditional totem poles. These attractions offer a delightful blend of fun, culture, and natural beauty, ensuring that your visit to Ondaldonggul Cave is a truly unforgettable experience.

Getting Here

If you’re traveling from Dong Seoul Bus Terminal, simply hop on an intercity bus bound for Danyang Intercity Bus Terminal. From there, take a local bus to Ondal Resort, your gateway to the enchanting Ondaldonggul Cave.

Prepare to embark on a journey through time and nature as you step into the captivating world of Ondaldonggul Cave. With its mesmerizing rock formations, tranquil underground river, and rich historical surroundings, this destination promises to leave you with cherished memories that will last a lifetime.