It was the only time in their whole lunar stay that Charlie had a real moment of panic and thought he had killed himself.
The crew nicknamed this operation “The Big Sneak.” They figured the only way to do this was to approach from behind a big rock, then reach over and collect the sample.
John and Charlie also collected several rusty-looking rocks with brown stains on their surfaces. These were exciting finds because the rusty appearance suggested the presence of hydrated oxides of iron. “Hydrated” meant water and the scientists had a serious interest in anything that could mean water had existed, or even still existed, on the Moon.
Flag Crater was so steep that if either one of them fell in, it would have been fatal! There was no rescue from the bottom of a big crater.