As you meander out into the hallway, you take in your new local surroundings. As you do, you notice something familiar in the wall across from the other secret door. It appears that the same type of thing is in the wall opposite it. It appears to be made out of the same material as the previous door and tunnel were - primarily stone, but covered and plated with lead.
However, this one stands out slightly more - it would appear that this one has been opened recently, forcefully. As though by someone who didn't know what they were doing, when they were opening it.
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As you begin heading left, or to examine the wall, Desimus speaks a few words, and suddenly there is a flash of purple, red, and silver sparks. These fade quickly, however, and only light up the hallway for a moment.
dkoz - after the shock of casting a spell in such close proximity to a large amount of psionics, and not to mention the token technology around, you manage to see that there are no arcane auras within the range of your spell.