正式名称は、真言宗醍醐派「諸法山・菅谷寺（かんこくじ）」ですが、通称「菅谷不動尊」として親しまれています。
開基は、護念上人（ごねんしょうにん：源頼朝・義経兄弟の叔父）により建久6（1195）年に創建。
その後、雷火により当時の伽藍が焼失するも、「みたらせの滝」に住むタニシの守護により本尊（不動明王）は守られたと云う伝説があります。
本尊は酉年と卯年の御開帳以外は秘仏とされています。
本堂（明和７（1770）年）と山門（慶應２（1866）年）は新発田市指定文化財です。

The official name used by the Daigo School of the Shingon Sect for the temple is “Mt. Shoho’s Kankoku-ji Temple.” However, it is usually referred to as “Sugatani Fudoson.”
It was founded in 1195 by Gonen Shonin, who was the uncle of the brothers Minamoto no Yoritomo and Minamoto no Yoshitsune.
A legend recounts that the temple was later destroyed by a lightning fire, but that a mud snail of the Mitarase waterfall protected the temple’s main worshiping object, a Fudo Myo-o statue, from destruction.
This Fudo Myo-o statue is usually kept hidden from view. It is only open to the public during a short period of time (during the Gokaicho event) on the Year of the Rooster and the Year of the Rabbit.
The main hall (built in 1770) and the temple gate (built in 1866) are designated Cultural Properties of Shibata City.