When you go to Hodges' Gardens in Many, LA there's a sign where you pay your entry fee saying "Louisiana/Texas viewpoint! 14 miles view across Texas border!" You're parked on a very tall cliff, itself an unusual thing in Louisian, and you stare out across what looks like a long valley of trees until your eyes give out from the enormity of staring out across what is reported to be 14 miles of Texas.
But my question is this: how exactly do they KNOW that? Did someone stand there at the viewpoint while someone else walked out into Texas with a sign on a big stick, measuring the feet until they dissapeared from sight? Did someone standing on the Texas border just so happen to be holding up a big sheet of cardboard that had "Hello from the Texas border!" at the exact time a viewer in Louisiana was looking that way?
I'm just curious.