Samseonghyeol, one of the most sacred places in Jeju Island... There is a Hongsalmun gate, and when you enter, you immediately get a sacred feeling surrounded by a forest.
The three gods, Goeulna, Yangeulna, and Bueulna, rose from a hole in the ground and became the progenitors of Tamna.
There are quite a lot of trees and it feels truly sacred.
Jeju Island officials also took care of it and served it with the utmost care.
Those holes are sacred blood... Samseonghyeol. It is the place where the Samsinin emerged from there, making it a sacred place in Jeju.
I took a picture because the cleaning person let me in.