Hearing Infernion's words, Dak follows the dragon back to the room and overlooks the slaughter below. He uses his expertise of caves and caverns to deduce whether their lives are at risk by venturing back downstairs where the beautiful, beautiful treasure chest laid dormant.

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Perception: (1d20+16)[17] to see if new cracks have developed and listening for any subtle sounds of cracking.
Dungeoneering: (1d20+15)[29] to see how stable this cavern is.