This is where you will find Tetsuryukai's mummy, Tetsuryukai was born in 1820 in Akita Prefecture. At the age of 16, he entered Nangakuji Temple. Specialists say Tetsuryukai was involved in a case of murder, which led him to seek to expiate his crimes.
He was very devoted in his task of helping the people around him. In 1848, he rebuilt Renshoji Temple (Iwate Prefecture) after a big fire destroyed the place. In 1871, he opened a tunnel with dynamite in the area of Kamo, so pilgrims and merchants could travel easily.
He became a sokushinbutsu in 1881, at the age of 62.
The mummy is located at the ground floor. The monks are not there all the time. You are asked to leave the entrance fees in the box provided for the purpose.