This was a multi-peak day. I could claim three summits here but I don't know what my second summit was called. Let's just say it's a part of Soraesan Ridge.
I started this trip with an easy ascent to Mt. Geomasan, then a traverse on a "horseshoe Soraesan Ridge" all the way to the summit of Mt. Soraesan
From Mt. Soraesan, I doubted if I claimed the summit of Mt. Geomasan. So, I went back to it. I didn't go through the ridge again, and instead I descended Mt. Soraesan directly towards Mt. Geomasan through the highway tunnel. Then regain elevation for another ascent to Mt. Geomasan.
I descended the same way I came up the first time, and met with the same trailhead for an overall 4hr roundtrip time.
I reached the summit (as I thought it was) at exactly 30mins from the trailhead. The whole summit ridge was claimed by the military. There were only a few lookout points to see the view. The mountain itself is not quite interesting at all.
I continued on to my next objective: a traverse to Mt. Soraesan. I followed a horseshoe ridge connecting to an eastern summit (I don't know the name of it). The trail I took to reach the horseshoe is on the left of the first military post I saw on my way up. It was a steep descent to the apartment buildings below.
I came back to this mountain after summiting Mt. Soraesan. It took me 1hr from Soraesan to Geomasan on a different route (see last photo). I then hiked the whole ridge and around the military barb-wired area to make sure that I didn't miss the summit, but I ended up at the same spot where I was before... the summit I thought it was the first time.