Cache is not at posted coordinates!
Good old trains. I spent hours in college down by Union Station watching freight trains pulling into the nearby freight yard. When I was a kid, my mom and I used to try guessing where the 4 a.m. train was going. Minnesota, Arkansas, Maine, California! Nothing sounded better than that whistle blowing off in the distance of the dark woods. Well to get this cache, you will have to see what these trains are trying to tell you. Its all right in the picture. Some people can naturally read this but for others it will be a cipher.
For example a boxcar is as plain as day. However, if you see ( engine + car ) then use this equation ( __x2 ), or if you see ( engine + car + car ) then use this equation ( __²). Don't worry, once the trains divulge their secrets, you will see the purpose of these 2 equations. Once you find GZ the rest should be apparent. This cache has been made to be a bit easier but with a bit extra to keep it just as difficult as before!
Congrats to Trail Buzzards and Brewer for their FTF.
You can validate your puzzle solution with certitude.