In the southern antechamber looking through
the inner portals to the main chamber.
The huge inner portal stones are set 0.8m apart, but this is not the original
state, the opening had been further reduced to 0.6m by the addition
of two false jamb stones, which had their own lintel and sill stone. These
additional stones were damaged and removed during
Anderson's 1866 excavation.
Note how only a partial view of the portal stone's rear faces can be seen from
this location.