Located west of Suyoung Bay, Igidae comprises tuffaceous sediments and andesitic volcanic rocks, the outcomes of Yucheon Group volcanism 70-80 million years ago. The site has a geological significance in studying volcanism during the late Cretaceous (70-80 million years ago) in the southeastern part of the Korean Peninsula. The Yucheon Group volcanic rocks, widely distributed over the Igidae, consist of andesitic volcanic breccia, tuffaceous breccia, tuff and lava flow. Having been eroded by sea waves, these volcanic rocks were transformed into diverse coastal landforms such as marine cliffs, wave-cut terraces, sea caves, and potholes. In particular, Nongbawi Rock and Chimabawi Rock in a trail course of the Igidae draw visitors’ attentions for their unique and mysterious forms created by the erosion of sea waves. The Igidae geosite exhibits a variety of geological heritage: hornblende-bearing dike of unique facies containing large-sized granules of amphibole; copper mine; and a peculiar joint set with horsetail structure and tree structure. According to the old literature Dongraeyoungji, the name Igidae comes from the graves of two (i) Korean Gisaengs (gi) 5.9 km from south of Left Jeolla Province Naval District. Igidae Coastal Walk has been designed for visitors to walk on sea cliffs among sounds of waves and a view of the sea and the sky. It is about a 4 km path which connects between Donsaengmal, Eoul Madang, Nongnawi Rock and Oryukdo Islands Sunrise Park. Also included in it are five Cloud Walkways where you can experience the waves breaking beneath your feet; a deck road stretching 1.5 km long; a steep and rocky road; and a dirt road in which you can get a great feeling out of the woods and the sea.