In 1970 Korea began designating Scenic Sites. The first one on the list was this valley, and it has held the number ever since.
Scenic Site number one
The park uses the same comparison in its own introduction: granite rock mountain, scenery that bears comparison with Geumgangsan, hence the name. Above the valley stands Noinbong at 1,338 m, set apart to the east of the main Odaesan massif, and the district around it is called Sogeumgangsan.
A word on which name to use. The park calls the district Sogeumgangsan, the course the Sogeumgangsan Course, the valley Sogeumgangsan Valley - and the peak Noinbong, which is the only one of those it gives a height to, and the name it uses for the shelter and on its entry-gate directions. The heritage register uses Sogeumgang for the designation. This page is named for the peak, because it is a guide to climbing something, and carries the valley name throughout, because that is what the place is known as.
The park names the section where its accidents happen
Korean park descriptions grade sections, warn about ice and mention equipment. It is rare for one to point at a specific stretch of path and say this is where people get hurt. This one does.
Elsewhere the same page advises inexperienced walkers to avoid the course altogether, and notes that the route is long and spends much of its length following the valley. Take the two warnings together: it is a thirteen-kilometre day with a technical middle.
What the rest of the walk is like
The first 2.5 km, Mureunggye to Guryong Falls, is easy uphill that the park says anyone can manage - and it is the part carrying the rockfall warning. It tells you to watch not only the path but the hillside and the ridge above, which is not advice you can act on while looking at your feet.
Guryong Falls to Baegundae is 1.7 km and an hour, on timber decking and steel bridges, with a specific caution about slipping in winter. Manmulsang - the ten-thousand-shapes rock formation - is half an hour above the falls, and Baegundae 600 m past that.
Then the difficult section, and then 3.9 km down to Jingogae in 1 hour 40. The park says that descent is downhill the whole way and mostly steps, which is punishing on the legs, and suggests breaking it up. Just under the summit there is an unstaffed shelter - for walkers who cannot get down, with no cooking allowed. It is described in the course text but does not appear in the park’s facility register, so we can confirm it exists and nothing else about it.
Three and a half months when the summit is out of reach
This is the practical fact that should decide when you come, and it is easy to get wrong because two different date ranges are involved.
So the summit is unreachable for roughly three and a half months a year, not the five and a half you would get by adding up the fire-risk periods instead. It is the same trap this site keeps running into: the period during which fire risk is designated is not the period during which the trail is shut. The lower valley - the Scenic Site itself - stays open throughout, which means a visit in April still gets you the waterfalls.
Two directions out of one building
At the Jingogae end the park has run a seasonal booking scheme on a different route: the Jingogae to Dongdaesan to Dongpigol line, which starts from the same trail support centre and heads the other way. In autumn 2025 it ran from 20 September to 14 November, with reservations taken online or in person at that centre. Check the park’s reservation site before you go.
The park’s own timed-entry table marks the Jingogae gate for the Noinbong direction, which is the clearest confirmation that the two are treated separately. But it would be easy to be pointed the wrong way on the day, so know which one you are asking about before you get there.
Same names, different mountains
Two collisions worth knowing if you are reading around. Manmulsang here is a rock formation in this valley; there is also a Manmulsang course in Gayasan National Park, several hundred kilometres south. And Sogeumgang, the name of this valley, is also used for the mountain on Namhae island that is formally registered as Namhae Geumsan - the only mountain in the Hallyeohaesang marine park.
Odaesan itself has a summit called Sangwangbong at 1,491 m. Gayasan has one at 1,430 m with the same name. Korean peak names repeat, and search engines do not know the difference.
Water, and what you may not do in it
For a valley famous for its pools and falls, the rules are tight. Summer water access is limited to a 200 m stretch in front of the Sogeumgangsan car campsite, and to hands and feet only. Swimming anywhere in the park is an offence under Article 29 of the Natural Parks Act, and the park enforces it.
What is not published
No cumulative climb figure and no trailhead elevations, so no height gain appears on this page. No heights for Baegundae, Manmulsang, Guryong Falls or Nagyeong Falls. Nothing about the shelter beyond its existence.
And one unresolved difference in the park’s own numbers: the course guide gives the Mureunggye to Guryong Falls section as 2.5 km, while the closure notice describing the same stretch as the part that stays open in the fire season gives it as 2.2 km. Three hundred metres apart, with nothing published to say which is right. Each figure appears below in the context it is published in.