Chokaisan Omonoimi Shrine (鳥海山大物忌神社) is ōkaisanŌa Shinto shrine located on Mount Chōkai.
In the middle ages it became a sacred spot for shugendo, a religion of mountain worship.
People worship a lake called Maruikesama at the shrine. It is a Kannabi and worshippers believe a god lives in it.
It is the Dewa Province Ichinomiya, or the first ranked shrine in the Dewa Province. It is related to the Three Mountains of Dewa
It has a festival every year on July 14 called Hi-awase shinji. where people light fires for good harvest and good fishing.
It has three subshrines. Fukura-kuchinomiya and Warabioka-kuchinomiya at the foot of the mountain and Sancho-Gohonsha at the peak
It had a legal battle after World War II because people were confused about who owned the summit
Fukura-kuchinomiya
Fukura-kuchinomiya is a subshrine located at the foot of the mountain
The Honden is located on a hill and faces south
Tsukuyomi-no-Mikoto is enshrined here
Sanchō-Gohonsha
This Shrine is on the peak of Mount Chokai. It was built in 564 in the reign of Emperor Kinmei. It looks like an ordinary cabin on the outside The shrine is rebuilt once every 20 years, it was rebuilt in 1997.
Warabioka-kuchinomiya
Warabioka-kuchinomiya is a subshrine located at the foot of the mountain. The shrine worships agricultural deities Toyoke-Ookami and Ukanomitama no Mikoto.
The shrine has four Hokora or small shrines on its grounds.
There is a festival on May 3rd called Daimonbei Matsuri.
There are three torii gates and the movie Rurouni Kenshin: The Legend Ends was filmed there