After a good nights sleep, Houston woke the astronauts up an hour early the next morning because of a slight oxygen leak.
It was immediately clear that Falcon had landed on uneven ground, right on the rim of a small crater; the LM was tipped backward at a slight angle. It turned out that one of the rear feet had landed in a shallow crater.
Craning to look through the triangular window for a glimpse of the land ahead, Scott saw no sign of Hadley Rille.
The SPS engine was used for all the future burns. It was the astronauts ticket home. Any doubt as to whether it could fire raised the question as to whether the mission could continue.