Among the parasitic cones of Jeju, this site possesses the second tallest figure, with only Gunsan Volcanic Cone being taller. At the peak is a crater lake with a circumference of approximately 250m, though the lake is not always filled with water. To the southwest is the upper region of Oedocheon Stream, while to the east is the upper region of Dogeuncheon Stream. Traces of a canon facility installed by Japanese troops during the Japanese Occupation still remain at the summit of the volcanic cone, and a spring can be found at the halfway point of the southern slope. Hanbak Reservoir can be found on the northern foot of Eoseungsaeng Oreum Volcanic Cone. This is where the water originating from ‘Eoseungsaeng’, which was famous for producing excellent horses, gathers after flowing through the valley. Currently, it is being used as ‘Eoseungsaeng Reservoir’ to supply water to the middle mountainous area. People generally refer to the area as ‘Eoseuseungi’ or ‘Eoseusingi.’ If the name originates from the fact that Eoseungsaeng was named such because it was where horses for kings to ride where born, then ‘Eoseungsaeng’ can be can be considered to have been written by reading the traditional Chinese pronunciation of the characters. If the folk names of ‘Eoseuseungi’ or ‘Eoseusingi’ are taken into consideration, then it can be considered a combined notation of the phonetic value characters.