Cheonmasan (Korean: 천마산) is a mountain in Gyeonggi Province, South Korea. It can be found within the boundaries of Namyangju. Cheonmasan has an elevation of 810.2 m (2,658 ft).
Etymology
Taejo of Joseon reportedly remarked about the mountain: "This mountain is so high, if its hand was just a stone taller it could touch the sky". Hence its name became "Cheonmasan", meaning "mountain that can touch the sky". ==References==