Originally, Munjangdae(문장대, 文藏臺) was called Unjangdae(운장대, 雲藏臺) because of a big peak rises high into sky and is hidden in the cloud. One day, while King Sejo of Joseon took a rest and recuperation in Songnisan, a young nobleman appeared in his dream and said "If you climb into the sacred peak and pray there, your body will be improved."
The story highlights the cultural importance of Munjangdae, a mountain with a mystical reputation. The name change from Unjangdae ("Peak of the Clouds") to Munjangdae ("Mountain of Words") reflects a shift in perception and emphasizes its connection to wisdom and spirituality.