I knew the fridge was coming, and that there was shelter from the rain there...so I was looking for it. Had I not known about it in advance, I probably would have missed it entirely.
The cyclist rest area near Dalton is at the corner of Henry and Wegner, linked here in a Google map:
https://goo.gl/maps/CqtHykL6CSp8jzyd6
Thanks for the positive feedback, y'all. I wish I had taken more and better pictures to share, but I was probably more concerned about completing each day rather than enjoying some of the views.