The sign of the sun
Once again the detectives and Laura spread out and begin to search.
They shine their flashlights on small sections of wall moving from top to bottom, and run their hands over the golden, rocky surface.
The others rush over to where Laura is crouched near a corner of the cavern. She shines her flashlight for them to see.
With steady hands, Brad scrapes his knife around the edges of the large rock and then pushes the blade underneath it. The rook is loose and he and Ben pull it from the wall.
Behind it is a black hole. Megs shines her torch into it and Laura takes a deep breath and reaches inside.