No New Ideas Under The Sun? Mystery Cache

I was taking to SID the other day and he was saying how he tries to make each puzzle cache something new and creative, hopefully something that’s never been done before. The Twin Cities is full of creative puzzle cache creators, so it’s hard to come up with a new idea. I thought I had come up with a unique idea two or three time before, but then Pfalstad would say in his log that he had seen something like it … If not in Minnesota perhaps in another State. The idea for this puzzle seems so simple it must have been done before. Maybe even on a puzzle I once solved and have now forgotten. There are new ideas under the sun, but this probably isn’t one of them.

You can validate your puzzle solution with certitude.

The entrance to the parking area where the cache is located must be approached from the North.