Wikipedia
Bukhansansillajinheungwangsunsubi (Monument commemorating the border inspection Mt.Bukhansan by King Jinheung) is one of the monuments built in commemoration of the tours of King Jinheung of Silla (540-575) in Silla Era. The King visited this area after the Han River was incorporated into silla territory. Originally, it was located at Bibong Peak on Mt. Bukhansan, but now it is preserved at an exhibition hall in the National Museum of Korea. The monuments are made from polished stones and it stood on a natural rock in a two-story pedestal. Because upper parts of monuments are missing, the remaining monuments are 1.54 meter high and 0.69 meter width. There is an article, which has 12 lines and each line has 32 letters in Haeseoche (the square style of Chinese handwriting). The written contents contain why and how the King visited the area, and most of them are acclaiming King Jinheung's expansion of territory. Also the inscription included King’s achievements.
Its building date is not clear because the era name carved on the monument inscription is worn out. It is assumed that it might have been built between 22nd year (561) of King Jinheung and 29th year (568) of King Jinheung when he founded Hwangchoryeongbi Monument or later than it. It is discovered and decoded in 16th year (1816) of King Sunjo in Joseon Era by Kim Jeonghui who was best calligraphers in Joseon dynasty. The historical fact that carved on the monuments are important material in studying the period of the Three States.