Seonggulsa is a Buddhist temple built from elvan stone, located about 1 km uphill from Gyeongheungsa in Gyeongsan. It uses two natural elvan caves as dharma halls, with Buddha statues placed inside the caves. Elvan water flows from the caves, and many stone pagodas are arranged around the area. The access road is a narrow, single-lane mountain path, so a car meeting another must back up.