Cappadocia Dark Church - 1; To the north, a winding stairway leads into the rectangular, barrel vaulted narthex of the Dark Church. This church has a cruciform plan, the arms of which are cross-vaulted. There is a center dome, with four columns and three apses. This church gets its name from the tiny window in the narthex which only allows a small amount of light in. Due to the absence of light the colors of the frescoes are still vivid.