The hall is divided into an outer chamber, central chamber and inner chamber, of which the inner chamber housing the principal image is also known as 'Shugyo-no-tanima' (lit. Valley of Discipline) due to its stone paved floor that lies 3 meters lower than the outer and central chambers, and its role as the place in which monks chant sutras and pray.
堂内は外陣・中陣・内陣に分かれ、本尊を安置している内陣は中陣や外陣より3mも低い石敷きの土間となっており、内陣は僧侶が読経・修法する場所であることから別名「修業の谷間」といわれる。