When you arrive at the first stage you will see a large mural. On the mural are nine large white pictures of prehistoric critters. Label these pictures 0 through 8.
Calculate the location of the cache by subtracting from the Stage 1's North coordinate:
[stegosaurus mastodon (3 x apatosaurus)]/1000
and by subtracting from Stage 1's West coordinate:
[tyrannosaurus rex stegosaurus pterodactyl]/1000
You can validate the coordinates for the Stage 2 (Final) with certitude.
Congratulations to
and Budzdunwerkin FTS!