[Radek]

What kind of stone faces do you mean?

(1) There are two statues of Temple Guardians, which block "secret corridors" leading further in the Shrine. You can move these statues. BTW, there is another statue in the Shrine that can be moved.
(2) There is also something like a passage behind a trapdoor in a wall, which is too low for you to pass. You cannot pass regularly. The passage leads into a small room, which contains nothing except another copy or Anephas corpse. Perhaps, it was planned during development of the game that the passage would have some meaning but the meaning was not implemented in the distribution version. You can vanish through the low passage. Do not forget to set a portal outside the passage before vanishing so that you can return safely.