It's rare when it happens. But it does. Regardless of the consequences, knowing full well what their actions might stem into, there are people out there that seek the glow of ancient treasure in the darkness of forgotten caverns.
"Hey," whispered the man with two combat knives to his guide. "How much longer are we going to be here?"
"A while," said the guide.
The man could barely see her in the dark.
"We just have to try and be very silent," she continued, "in case there's anything out there that can be disturbed."
It's often an echo. The simple repetition of a single step that travels and bounces in the walls, reaching the ears of ancient sleeping terrors.
Terrors that hate being awakened by noises that do not belong in their lairs.