In a section of the hallway where a shaft of sunlight illuminates the chamber, Indy warns, "Stay out of the light." To test his instincts, he momentarily places his hand in the shaft of light. This sets off a primitive, light-sensitive booby-trap. With a ferocious noise, giant spikes spring together from the sides of the chamber - impaled there on the gate are the remains of a white man, half-flesh, half-skeleton, his mouth agape in horror. Indy recognizes the explorer-victim, his competitor: "Forrestal" - one of the best explorers in the business. They continue on.