The Legends Were True

Entering into a pitch dark chamber, a sudden light pierces the darkness from above, just as the door slams behind you. Illuminated before you appears to be a podium with a map on it. You feel compelled to take it. Suspicious.

What's the worst that could happen? As you grab the map, an opening appears before you on the other side of the room.

As you sneak around the dark, looking for a way out the room starts to violently shake. With a sudden crash, the entire chamber collapses around you. Barely making it out of the rubble, you find a vial of something useful that must have been hidden in the room.