Hi
Today I run into a trap that was OOCly hidden.
On the first Terg ruins, the just one before the base of the mountain. Entering the dungeon, go straight to the zigzag corridor on the opposite side of the room.
On that corridor, there was a trap between four columns, just before the next door, and it was almost invisible OOC, there was no mark on the ground. but the very tip of the columns were red. Right clicking the ground gave me the option to disable the trap. After disabling it, the tip of the columns got back to their regular color.
Sadly, I have no screenshot. I hope the description I gave was good enough ^^