Averella blinked.
"I'm not sure a traditional key would fit." She blinked and observed it closer. There were definitely recesses, and some went in deeper than other- like key holes, only more shapely, with obvious ornamentation.
Taking the details into account, she stepped closer to the wall in question and let her hands smooth down the support beams around a door frame type decore.
"I remember the stories about the door locks... I know it sounds silly and is an old tail, but ancient Essyrni society once held locks within the rooms using iconic symbols as keys."
She continued to look and gasped when her hands fell over something brass. It was just about the right size of the recess, and when she began to twist it, the brass ornament began to come loose from it's frame.
"Look!" she held up the small brass charm, which was no bigger than a marble, up in the palm of her hand so he could see it. "This looks like it could fit in one of the recesses. Shall we try it?" It couldn't hurt, right? So over to the pedestal she went, and found the matching piece. This one was a bird, with leaves for eyes. She took the metal one and placed it into it's matching recess. It snapped into palce as she held her breath.. but nothing happened.
"Perhaps there is something else to it?" Her hands idly moved up and down the shaft where the other hollows were. "Or.. we need to find each insert..?" She looked over at the door, and then around the room. There could be others but...
One part that had her worried was the tomb was pretty old and the pieces were made of brass, or gold.. something metal and once shiny. It was very possible if someone found these trinkets, and although small, they might have taken them for money. She had seen too many tomb robbers in her day. But she wasn't about to dash their hopes yet. especially as her eyes fell upon another similar shaped and sized one attached to a nearby, long since vacant, water chamber.
"Look! Another!" She unscrewed the piece and held it up into what fragments of light were afforded. "This one looks like the head of a snake."