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A walk down one side of the S-IVB stage.

Picture 2 of 4.

This picture features the entire stage, including the single J-2 engine, thrust structure, aft skirt, propellant tanks, and forward skirt. The large white fairing on the top of the aft skirt leading to the silver pipe along the thrust structure is the LH₂ feed line.

Partially obscuring thrust structure, in the upper left of the picture, is one of Lunar Module #9 (LM-9)'s landing legs.