Something "old" from Flint Trail?

[Hatchcanyon]

Developing digital pictures I stumbled upon one taken from Flint Trail Overlook, showing the main part of the trail. Nothing new or special.

But then a line catched my eyes. Now I believe there was another, older Flint Trail than this one we use today. Look at the picture and you see a curved line below the upper stretch of the downhill grade. Is this an older, steeper stretch? Some kind of a "Ghost Trail" nowadays?

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