一切経堂から約20分山道を登って行き、分岐点から左折すると大きな岩壁が見えてくる。少し進むと巨石にトンネルがあり、抜けると知恩堂に着く。知恩堂は、中興の祖である豊田カヨ尼僧によって開山された。当時、目のくらむような絶壁の途中の畳三枚ぐらいの広さに、むしろ作りで雨露をしのぎ、修行され霊感を授けられた。衆生済度に尽くされたという。昭和44年、88才で逝去。
　この巨石などのくぐりは、胎内めぐりと云って、多くの霊場には見られ、仏の胎内に入り、身を清め、心の安心を願うものである。
英語バージョン
「Chion-do」
After ascending a mountain trail for about 20 minutes from the Issai-kyō Hall, when you make a left turn at the junction, you will see a large rock wall. A little further ahead, there is a tunnel through a massive stone, and upon passing through it, you will arrive at the Chiondō. Chiondō was founded by the venerable nun Toyoda Kayo, who is considered the revitalizer of the temple. At that time, in an area about the size of three tatami mats amidst the dizzying cliffs, a shelter was constructed to protect from rain and dew, where she practiced and received spiritual inspiration. It is said that she devoted herself to the salvation of sentient beings. She passed away at the age of 88 in the 44th year of the Shōwa era (1969).Passing through structures like this massive stone is called "taidō meguri," and it can be seen in many sacred sites. It involves entering the womb of Buddha, purifying oneself, and seeking peace of mind.