As you raise your eyes to the mountains you will reach their summits till you will fall on your back when your neck disappears and becomes your back . You reach them to the point where they will join up with the sky.
Then your eyes will be blinded by the brilliant sparks the sun the welder makes and you cannot determine where the seam occurs.
Up the mountains you feel free with the eyes and the neck you can swivel enough to reach your eyes to the summit . Till you are on your back where the welding seam between their tops and the sky is clearly visible.