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Last week we drove down to Knoxville, Tennessee to spend a few days with our good friends Bob and Sharon. As we pulled out to come home Friday morning, I suggested to Yvonne that we take a scenic loop up through Big South Fork National Recreation Area, and get on I-75 at Williamsburg, Kentucky. It was a beautiful day and we were in no hurry to get home, so Yvonne indulged my wandering spirit.

The sun shining through the car window felt pleasantly warm as we headed north toward Oak Ridge, and it wasn