The abandoned bunkers, temples, and caves of Inwangsan (인왕산)

Some of these bunkers were built in the 1960's right after North Korea bombed Baengnyeongdo. Others were added later, along with a pool for the soldiers stationed on the mountain. The octagon bunker was a rec hall. The cave-like shrine was probably just an old shrine built to be used temporarily while the newer, bigger one was built.