The Gyeongju O-ak
Five Sacred Mountains of the Capital of Shilla,
defending and sacralizing the nation
Shilla Kingdom's "Inner O-ak" in Gyeongju City:

East:          Toham-san

South:        Nam-san  (Geumo-san)

West:         Seondo-san

North:        Sogeumgang-san

Center:      Nang-san  (Nak-san)
Unified Shilla's "Outer O-ak" in Southern Provinces:

East:          Danseok-san

South:       Jiri-san

West:         Gyeryong-san

North:        Taebaek-san

Center:      Palgong-san
경주오악   or  a.k.a. the Gyeongju O-bong  경주오봉