This is from a highly recommended hike in Hallasan Nat'l Park at the Eorimok entrance. This oreum, Eoseungsang, has an absolutely spectacular view of the city and of the mountain, as you can see from the picture. Its about a 1km hike and takes 1 hour round trip. The hike is set up like a nature trail, and has a completely different feel than the neighboring Eorimok trail up Hallasan. If you live in Jeju, or are visiting, check it out!