Before I started geocaching I never spent much time around guardrails ... of course now I feel quite well acquainted with them. I was recently driving along a stretch of road where the guardrail was being replaced (I wondered if a cache had disappeared along with it) and it was interesting to observe the process. All of the upright posts had been laid out along the side of the road, and you could tell they were going to go along and set each of them before putting in the "rail" parts. It was kind of neat to see it in action. Today's Tennessee puzzle will give you a little more insight into:
Tomorrow we'll be back in Pennsylvania.