용추폭포무주 Yongchu Falls, showing its unique shape staircase formed by development and erosion of horizontal or vertical joint, it is also academic attraction because, of its unique appearance, it is composed of rocks formed about 2billion years ago. According to the reasearch result of the scholars, since its first formation about 2billion years ago, it is assumed the rock was transmuted into the current one by heat and pressure at the time of 200million years later(about 18 billion years a go) #자연특별시무주 #무주군문화관광해설