The inner northern apse.
The axial altar is on the left and the
inter-apse doorway is to the right.
As with the outer apses, the height of the upright slabs forming the apse are
much lower than those of
Temple 2, although they are topped with two good courses of nicely finished
corbels.
This apse seemed to have suffered from erosion more than any of the others in
the temple, this can be
seen in the photo above on the left (northern) quadrant. Click
here for a close-up of the damage.