Oedolgae, the starting point of Jeju Olle Trail Course 7, is a stone pillar that rises 20m high from the sea. Standing alone on the sea, it was named ‘Oedolgae’. It is also called ‘General Stone’ and ‘Grandma Rock’, and there is a story that General Choi Yeong decorated this rock like a general when fighting against the Yuan Dynasty and made the enemy self-destruct. For the origin of the name 'Grandma Rock', read the legend below. Not only the visible rocks, but also the life of Jeju people waiting for the people of the sea can be seen.

Seongsan Ilchulbong Tuff Cone, a landmark attraction of Jeju, was formed about 5,000 years ago from an eruption of magma on the ocean floor. It is especially famous as a sunrise viewing spot, known to be one of the top ten exquisite sceneries of Jeju Island.Besides viewing the sunrise, Seongsan Ilchulbong Tuff Cone is also known to be an excellent trekking spot. The Seongsan-Ojo Trail connects two villages by crossing the peak. Another popular trail, the Jijil Trail, offers a closer look at the UNESCO-designated geopark as well as Jeju’s local culture. Walking along one of these paths is recommended to really experience the area; walking all the way to the summit offers views of both the vast volcanic crater in the center and the blue ocean surrounding the area. To complete your trip, head to Seongsanpo Port to watch haenyeo (female divers) at work.

성읍민속마을 (Seongeup FILK Village) The entire village, which preserves the living site of the people of old Jeju, has been designated as an Important Folklore Cultural Heritage. Though it can be considered a folk village of sorts, it differs from regular folk villages in that people still live in it to this day. The village residents act as volunteer guides to offer visitors all sorts of information. The Saw-leaf Zelkova and Japanese hackberry in the center of the village are worth taking time to see.

Sangumburi Crater differs from the 360 or more parasitic cones of Jeju in that it was not formed when the materials ejected from the eruption stacked.Instead, it is a maar-type parasitic cone that was formed as a crater with a hole in it when many materials were ejected.The inner area is 300,000㎡, while the interior bottom circumference is 756m, and the exterior circumference is 2,070m. Nearly vertical, the crater is approximately 130m tall, making it slightly larger and deeper than Hallasan Mountain.In autumn, when the ridges of Sangumburi Crater are colored gold by waves of silvergrass, the planted cedar becomes the dominate species that take up most of the eastern and western slopes, with Sawtooth oak in the surrounding area.Furthermore, Korean Fir has been planted to form a forest path. Excluding these lush forests, colonies of Eulalia grass cover large patches of the crater.

As a K-drama filming location, it is a beautiful place with a view of Seongsan Ilchulbong in Jeju. Couples or families can take a leisurely stroll

If you walk along Jeju Olle Course 19, you will come across Hamdeok Beach, which has an emerald jewel. Hamdeok Beach, located in Hamdeok-ri, Jocheon-eup, Jeju-si, is also called ‘Hamdeok Seoubong Beach’ because of Oreum (Seoubong Peak) standing right next to the beach. It is only 20km away from Jeju Airport, but the moment you arrive here, you feel like you are in another country. The tall palm trees that welcome you from the entrance, the emerald sea that contrasts with the white sand, the clear water and white waves that make even the sand and seaweed transparent are like that. Among the numerous beaches in Jeju Island, if you choose three places with the most beautiful sea color, it is definitely Hyeopjae Beach, Gimnyeong Beach, and Hamdeok Beach. The water is clear and the water depth is shallow, so it is also a good summer resort for families. The west side of the beach is connected by an overpass, so you can experience walking on the sea.