Bukhansan Mangyeongdae is a rocky mountain consisting of weathering of 787m of granite, and is also called Samgaksan Mountain along with Baegundae and Insubong Peak. The name is given because you can see 10,000 views, and the view is very good.
Unlike Baegundae, which is equipped with iron fences and safety devices and can be climbed by ordinary people, there are no ropes or any safety devices, so it is almost impossible to climb unless you are a professional rock climber.