Soesokkak (쇠소깍) is a stunningly beautiful estuary located in the city of Seogwipo, on the famous Jeju Island in South Korea. This is where the Hyedongcheon freshwater stream meets the ocean, forming a deep and calm pool famous for its crystal-clear water and unique scenery. The name "Soesokkak" comes from the old local name "Soedun," which, according to one version, means "a cow lying in a pond."
The main feature of Soesokkak is the harmonious blend of unusually dark blue water, whimsical lava rock formations, and dense pine forests covering the banks. This landscape creates a mystical and peaceful atmosphere, making the estuary one of the most picturesque and photographed spots on the island. Its unique geology and natural beauty attract both nature lovers and those seeking a quiet getaway.

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In addition to contemplating the stunning views, visitors can explore the estuary more actively. Water tours on traditional "tewu" rafts or transparent kayaks are popular here, allowing you to fully enjoy the beauty of the rocky shores and see the bottom through the purest water. Due to its unique beauty and recreational opportunities, Soesokkak is a must-see on many travelers' Jeju Island itineraries.