The Seukgulam Grotto is located near the summit of Mt. Tohamsan. It has a seated Buddha statue made of granite and a bunch of carvings of gods, Buddha's deciples and guardians.
I took a side trip to bag the summit of this mountain while the ladies were hiking back to the temple. Access is at the back of the Seukgulam Grotto ticket booth and it took me 15mins up and a hoppin' and joggin' 30mins down back to Bulguksa Temple