Gilligan and Mr. Howell fall into the cave where the gold is discovered. However, it is not made clear how they were able to get out of the cave and back to the surface where they originally fell. At 18:06, Gilligan and Skipper stop by to rent their mining equipment to the Howells, and there is a ladder against the cave wall they must use to climb down. Therefore, the question is how did Gilligan and Mr. Howell get out without calling for help and letting the others in on the discovery of the gold mine.
When working on the Minnow's life raft, the Professor is seen wearing a pair of light- colored jeans instead of his usual tan trousers.
At 2:10 Gilligan disappears from the frame as he falls into the goldmine pit.