사패산(Sapaesan Mountain)
Sapaesan Mountain is a mountain located in Uijeongbu-si, Gyeonggi-do, and is 552m high and connected to Dobongsan Mountain.
There are two stories that Sapaesan Mountain was called Sapaesan Mountain because Princess Jeonghui, the sixth daughter of King Seonjo during the Joseon Dynasty, gave it to Yoo Jeong-ryang when she married, and there was a place under the mountain that produced mapae.