Duped by the Visit Korea website which claimed this to be one of THE places to see fields of silver grass, I embarked on a mid-week hike up Oseosan (오서산) in Chungcheongnam-do (충청남도). Although the silver grass at the top of the mountain was nothing to shout about, the trails were one of the prettiest I have been on thus far in Korea, with wooded areas and clear streams to cross nearer the bottom and more challenging rocks to clamber over nearer the top. The views from the top were outstanding and unhindered (on a good day, the sea is visible). Being just 791 metres in height, this is a very doable day hike.
About two and a half hours outside of Seoul via a train from Yongsan Station (용산역), the station that is nearest the mountain is très quaint, a small blue building with flowers and persimmon trees growing along the track. On the way to the trail, there are yellow fields, wooden houses with mud walls, small mounds of grass that mark graves in Korea and the distinct whiff of countryside. The whole area just seemed to be the epitome of what one would envision the Korean countryside to be.
The practical information:
From Yongsan Station, the train to Gwangcheon Station (광천역) leaves every two hours and costs 9,900 won or 14,900 won (depending the type of train). From Gwangcheon station, a ten-minute cab ride to the parking lot at the foot of Oseosan costs 7,000 won (cabs will not go meter so agree on a fare beforehand).