Ptolmek snapped to attention. It was as if a large felt blanket had been over his head and now removed. For some reason the sensation reminded him of the ritual masking ceremonies often performed by natives of the Andorian Plains, a bloodthirsty bunch of barbaric elves north of Ptolmelk's bleak homelands. Ptolmek consulted the map briefly and suggests they next explore the Main Hall and Kitchen.
In agreement with his suggestion, the party moved as one, swiftly to the large chamber. The room resembles the storage chambers of an ancient museum. A varied and vast collection of items displayed throughout the Main Hall bounce light off solid gold, and refract rainbows through hanging gems and crystalline artifacts.
A massive archway invites visitors into the next chamber to the west. A mural of geometric patterns covers the ceiling. Where the mural fails to cover the ceiling it is adorned with naturally growing crystalline stalactites.
A closed narrow door made of ornately carved wood sits between two other doors on the east wall. Also on the east wall a large leather strap hangs from half a brass orb which sits flush with the door jam, halfway down a closed wooden door.
Unfortunately, the room is dominated by a Large Monstrous Centipede curled up atop a pile of ornate furniture, tapestries, and crushed works of fine art. As the party enters the room, the foul monstrosity stirs, and descends his mounded hoard in favor of feasting on the unexpected meal.
What do you do?