Upper left and center: Dam close up
Upper right: The actual spring emerges on the far end of this pool. Businesses in the town of Mammoth Spring can be seen on the skyline.
Lower two photos: Videographer Neil Rosenbaum uses an observation platform to shoot a wide pan. The dam is in the distance, holding back the spring's flow to create a cold lake. The spring emerges on the far right, just out of the shot.