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Jeju Island is the largest island in South Korea and one of the New Seven Wonders of Nature, with an area of 1,833.2 km2 (707.8 sq mi), or 1.83 percent of the country's total area. It is situated in Jeju Province of South Korea.

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Jeju Island, known for its volcanic landscape, lush greenery, and serene beaches, is a top destination for both tourists and locals alike. Situated off the southern coast of the Korean Peninsula, it is not just the largest island in South Korea but also a unique natural wonder. Jeju was formed by volcanic eruptions approximately 2 million years ago and is dominated by Hallasan, the highest mountain in South Korea. This dormant volcano is not only a sight to behold but also hosts a variety of ecosystems in its surrounding national park.

What makes Jeju truly special is its rich biodiversity and well-preserved natural attractions. The island is a haven for nature lovers, featuring diverse flora and fauna, including several endemic species. The subtropical climate supports a range of botanical resources not seen elsewhere on the Korean mainland. Tourists are often amazed by the iconic Jeju tangerines and extensive green tea fields that add to the island’s vibrant palette of colors.

Jeju's appeal also lies in its geological uniqueness, showcased in features like the lava tubes—a network of underground caves formed by flowing lava—which have been designated a UNESCO World Heritage Site. The coastal waters surrounding Jeju are equally fascinating, with their crystal-clear visibility and abundant marine life, making them ideal for diving and snorkeling.

The island also resonates with culture and tradition. Jeju’s inhabitants, known for their distinctive dialect and customs, hold a matriarchal family structure, which is quite rare in South Korea. Women, traditionally known as Haenyeo (sea women), dive into cold ocean waters to gather shellfish, seaweed, and other marine products, showcasing a community lifestyle deeply connected with the ocean.

For tourists, Jeju offers an array of experiences from exploring the mysterious beauty of volcanic craters and lush forests to relaxing on its sandy beaches or indulging in local culinary delights. Each season brings a new side of Jeju to light, ensuring that no two visits can ever feel the same. Whether it is the blooming of spring flowers, the sandy shores in the summers, the golden hue of ginkgo trees in the fall, or the snowy scenery of Hallasan Mountain in winter, Jeju provides a year-round retreat into nature's embrace.

With its breathtaking natural wonders and captivating cultural heritage, Jeju Island stands as a proud emblem of South Korea's beauty and resilience, continuing to enchant visitors from around the globe. Whether one is seeking adventure, relaxation, or cultural immersion, Jeju promises an unforgettable experience.