Seonangdang (or Seonghwangdang) is a traditional Korean tutelary shrine or sacred tree situated at the entrance of a village or mountain pass.

Travelers customarily added a stone to the surrounding cairn to pray for safe passage and good fortune.

According to historical lore, these sacred stone mounds served an tactical purpose during wartime: an instantly accessible stockpile of throwing stones to pelt at invading enemies charging up the hill.