Sogni-san area  Boeun-gun
Hyeongje-bong  Jang-go
jae Pass
Sanshin-gak
This extremely obscure site is outside the Sogni-san National Park border, in wild mountains in Boeun-
gun County, near the
Baekdu-daegan mainline, part of its region.  It is located near a
sharp hillock called
Hyeongje-bong [Elder-Brother Peak] and north of the Jang-gojae [Guardian
General Old-Pass hiking trail.  It's in a 'saddle' that seems to have once been a pass over the
ridge, but now the ancient trail has been
almost totally lost, and the area is just forested wilderness.
My old friend
Roger Shepherd "discovered" this a decade ago, and he, my friend A. Jake Preston
and two other "mountain-kiwis" visited it in March 2021. Jake & Roger gave me these photos.

It is not known how long this site has featured a
Sanshin-gak [Mountain Spirit Shrine] as a pass-
guardian (against tiger attacks, stranding weather or other bad-fortune;  nor who built this
crude modern one, nor who now maintains it or ever holds a
Sanshin-je ceremony at it.   
The icon-portrait is simple, crude & cartoonish, probably one of the mass-printed types.
The traditional pyeongaek signboard over the doorway is too corroded to read well,
with the first character (reading R-to-L, rare) impossible to i
dentify, but Jake guesses that
it says (?)峯山王閣 / (?)봉산왕각 / ?-bong Sanwang-gak / ?-peak Mountain-King Shrine.