Wikipedia
Seonangdang
The Seonangdang ( Hangul: 서낭당), also known as the Seonghwangdang ( Hangul: 성황당, Hanja:城隍堂) are holy stone cairns or trees that are dedicated to the deity Seonangshin, the patron of villages. The Seonangdang still remain common in the mountainous settlements of the Korean Peninsula.