?

This episode returned to the good writing that entangled both the off island flashback of Mr. Eko and his on island story. Through his dreams (or religious visions) he insists that he and Locke search the jungle for the ? which leads them back to the wreckage of the small plane in which Mr. Eko found the remains of his priest brother. Locke has a dream which shows Mr. Eko where to go, enabling him to see the ?, which turns out to be another hatch. Inside the hatch they watch another orientation film which cause Locke to lose his faith in the button pushing, but surprisingly has the exact opposite effect on Eko.