Took a trip to Sunchang county's Gangcheonsa (강천사) on Halloween, and while Seoul was getting rained on we enjoyed a perfect fall day. I should say we took a trip to Gangcheonsan (강천산); we never made it all the way up the trail to the temple.
You'll can browse the 94 pictures in the Flickr gallery at your leisure; here are a few:
The water in the creek was remarkably clear:
Here's what's available from a Naver search. The reds and oranges were striking. And the reds, oranges, greens, and pinks on the track suits were remarkable, too.
It's a 90-minute bus ride to Gangcheonsa from Gwangju. I'm not sure how long it takes to hike to the temple because after about a ninety-minute stroll we didn't seem to be anywhere near it. There is course information and maps available here from 한국의산하. You'll find a timetable for buses to and from Gwangju here; the times given on the Gwangju Bus Terminal website don't seem to be accurate.
Gangcheonsa came highly recommended from my Korean teacher, though we settled on it because the buses to and from Daewonsa in Boseong county were a bit inconvenient. But the scenery was a happy surprise, as was the weather, and I'll be sure to talk-up the place a little more on next year's regional fall foliage preview.