ALL 4 Sun-Stone piece of puzzle/ Location of pieces:
1.Solve a candles puzzle on the left side of that room.
In the center platform you will find a 1st fragment.
2.2nd fragment is placed in Taimurian Camp. You should solve
a Totems\Statues puzzle and after that you will find here
a piece of stone.
3.3rd fragment could be found in Dura’Tyr in room.
4.Last piece of Sun-Stone is placed in Ziggurat of the Sun.
Just change a mirror near the teleporter on that hole and
you will get it.