The final is not at the posted coordinates. To find the final stage you must find all of the bison cache series! 1-6. Inside the lid you will find a number giving you excatly what you need.
N43 52. GREEN, SILVER, GOLD
W78 44. BLUE, RED, PURPLE
If you like this cache then please give it a 
. I see each and everyone of them and it's what keeps me going! 