원대곡(原大谷)은 뒷산인 황술재를 중심으로 좌청룡 우백호가 뚜렷하게 흘러내리며 큰골을 형성하여 붙여진 이름이다.
Wondaegok is the name given by the fact that Cheongyong to the left and Backho to the right centrally with Hwangsuljae, a mountain behind it, run distinctively down, forming the huge valley.