RPG Addicts | We Know You're Hooked

Torin go to end of the south corridor. It there he doesn't find anything interesting for first look the he take a full search backwards to the remains.
After he continued his plan and go back to the right side corridor's dead end and take a full search also there.

(OOC - cross-posted. see my last post modified)

Torin hold his shield and cautiously press this another secret button.

Another grating sound is heard and the north wall dissolves into nothingness.
Torin is back to the dead warrior.

Torin cast a Detect Magic and examine the whole dungeon with this spell.

If he didn't find anything he countinues his plan:

"Torin go to end of the south corridor and he take a full search backwards to the remains.
After he continued his plan and go back to the right side corridor's dead end and take a full search also there. "

The whole wall of the eastern dead-end shines in blue as it comes into the scope of the detect magic spell. (marked red on map because of blue background)

How many auras can detect Torin? What strength is/are this aura(s)?

Torin try to detect the school of this aura(s):
1. Spellcraft: 25
(2. Spellcraft: 28)
(3. Spellcraft: 21)

The overall wall radiates a moderate illusion aura.
There's something else beyond this moderate aura but its strength is weaker and hard to discern.
However, looking more thoroughly Torin finds the same "safe passage" rune on this wall as well.

Torin go through this illusory wall in eastern "dead-end".

Torin passes the wall easily and on the other side he finds a statue of a dwarf, about twice the real-time size. The dwarf statue bears the symbol of Moradin and holds a wooden chest in its hands (as part of the statue, i.e. made of stone, not a real wooden chest).