The shaft of the south-western column of the interior is girdled with an eight-arch arcature, the capital is accentuated, on the transversal axis, by a large rosette above which, on the face of the arch, there is a relief representation of a dove with a lifted wing. The abutment on the western side, corresponding to the column, has smaller vertical divisions than the other wall-attached abutments. Rosettes of various designs, painted white, yellow and red, were cut on the flat ceilings of the corner sections. The decoration of the central section was richer. Floral ornaments covering the shield-shaped pendentives show birds in various attitudes. The girth of transition to the 20-hedral base of the ceiling which probably consisted of six intersecting arches is composed of groove-divided triangular slabs, vertical and inclined.