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■ Hidden Earth Part 5 - The Birth of Seoul Seoul is surrounded by granite belts such as Bul-am Mountain, Surak Mountain, Sapae Mountain, Dobong Mountain, Bukhan Mountain, and Gwanak Mountain. We examine the relationship between granite, which is always nearby but has never been discussed, and today's urban civilization. According to recent zircon dating results, Bukhansan granite was formed 170 million years ago, underwent metamorphism 500 million years ago, and underwent magmatic activity 2.55 billion years ago. The West Sea sand flats, the beginning of pottery culture, and the reason pine trees on the edge of cliffs survive are all related to the characteristics of granite. Granite, which is created when water and magma meet deep underground, exists only on Earth among the planets in the solar system. Planet Earth, the planet of life, we connect the present of rock-life-civilization through Bukhansan seen outside the window. ※ This video is [KBS Grand Project Hidden Earth Korean Peninsula 3 Billion Years - Birth of Seoul] aired on March 23, 2023. #Environment #Documentary #KBS