This variation I found on a 1977 United Artists recording of Doc & Merle Watson titled "Lonesome Road".

Look up, look down that lonesome road.
Hang down your little head and cry, my love.
Hang down your head and cry.
The best of friends must part some day,
And why not you and I, my love,
And why not you and I?

The longest train I ever did see
Was on that Georgia line, my love,
Was on that Georgia line.
The only girl I've ever loved
Is on that train and gone, my love,
Is on that train and gone.

The darkest night I ever saw
Was the night I left my home, love,
Was the night I left my home.
I never thought when we first met
This awful day would come, my love,
This awful day would come."

**repeat first two verses again**