Many of the apses have raised “porthole” doorways positioned at odd angles from one another, so that someone entering the room can’t peek into the next chamber through another porthole. If you look closely, you’ll see notches on either side of this porthole. These holes probably served as the lashing points for screens or doors made of thatch, hide, or wood. To the left of the porthole is a depression or dimple in the stone, used for holding a round-bottomed libation jar, several of which were found at the site. In the foreground is a fabulous freestanding altar that’s decorated with what looks like a potted plant or tree. (This one’s a reproduction; the original is in the National Museum of Archaeology.)