Forming a low hill like a cocoon lying north to south, this mountain has been preserved as a sacred precinct since the 12th year of the reign of King Silseong (413) of the Silla Period. According to the record, when the king saw an auspicious cloud hanging around Nangsan Mountain, he thought the guardian spirit of the mountain played on the mountain. He ordered the people that "This blessed precinct is to be preserved. Nobody is allowed to cut trees in this mountain.” Around the 7th century, this mountain -- regarded as the sacred mountain of Buddhism -- was changed to where blessings were given to the royal family. Thus, there are lots of remains of Silla, such as the site of Sacheonwangsa Temple where Hyangga, a native song of Silla, originated, Neungjitap Pagoda for King Munmu, Rock-carved Buddha, Three-story Stone Pagoda in Guhwang-ri, etc.