Woraksan means 'moon-crag mountain', from the moon appearing to rise out of a notch in the summit. Yeongbong, the high point at 1,094m, is a near-vertical block of rock that has to be climbed on steel stairways — which is unusual enough in Korea to be the reason many people come.
The park was designated in 1984, just before the Chungju dam finished flooding the valley below in 1985. That timing matters: the lake beneath the mountain is not natural, and the view everyone photographs — peaks above a long sinuous body of water — is barely forty years old.
In the Deokju valley on the southern side are Deokjusa and the Mireuksaji temple site, with a large standing stone Buddha carved in the Goryeo period. Local tradition ties both to Princess Deokju, daughter of the last king of Silla, who is said to have fled here when the kingdom fell.
Because the park wraps around the lake, it works as a two-day trip in a way most Korean mountain parks do not: climb one day, take a ferry the next.