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."
Munjangdae(문장대, 文藏臺) is a mountain with a prominent peak that was initially called Unjangdae ("Peak of the Clouds") due to its cloud-covered appearance. King Sejo's dream and the nobleman's advice are connected to the mountain's spiritual significance.