신라 원광 법사가 가슬갑사를 주석하고 무예를 연마하며 삼국 통일의 원동력을 일으키게 한 곳이 운문재로 알려져 있다.
It is known to be Unmunjae Hill where Wongwang of Silla trained the martial arts and established the driving force for Silla’s unification of three kingdoms while he was stayed in Gaseulgapsa.