As the rubble settles nearly 50 ft away, 10 of the guards as well as all 5 archeologists gather near the newly revealed entrance way.

Hathor
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No matter how hard you try to take a chip out of the wall you can not. You stop when you realize that you are doing more damage to your own tools then to the wall.
A more detailed examination of the wall reveals that the wall is indeed an Adamantium and steel alloy, though you think that this must be only an overcoat. As an interesting side note, you do not think that an Adamantium alloy can be created non magically. You also find the evidence of murder holes around the entrance as well as arrow slits farther up the wall, some of which look large enough to fit a ballista behind.