Turning your back to the pillared room, you're fairly certain that the secret door you came from is on the right hand wall 1/3 of the distance between here and the opposite corner.
It takes a few moments of searching, but you are able to find the latch just as you begin to hear heavy footsteps headed your way from at least one of the corridors the ogres went down.
Ducking inside, you find a small room. In it you find a campfire that had been doused, a pile of rags, and a pair of small charred humanoid corpses. The smell of cooked meat fills the room.
The footsteps come down the corridor you just left. They stop just outside the door. Your sensitive ears pick up the sound of someone sniffing the air. A few grunts emerge from the Ogre's mouth, which are returned by his partner. It then says in Common: "I smell cooked flesh, Goblin, did the humans eat you first? " It runs further down the corridor, stops, then returns. A few grunts from each of them and they tromp away. It's impossible to tell which of the three corridors they went to this time.