Case file · Cryptid
The serpent of Gimnyeong cave
Jeju legend says a giant snake in the Gimnyeong lava tube demanded a virgin each year until the young magistrate Seo Ryeon (also written Seo Rin) killed it in 1515, then died himself.
1514 CE · 33.53, 126.77 · status: legend
The account
A stele to Seo Ryeon stands near the cave, part of the World Heritage Geomunoreum lava tube system.