To find the cache, you must first go to the listed co-ordinates.
Assume the street number of the farm is "A"
Final co-ordinates for the cache are at
S 34° 04.(941-A)
E 150° 39.(6A+10)
A short drive from the posted co-ordinates, enough room to park on the side of the road.
Bring your own pen. No room for trackables or treasure swaps. You are looking for a bison tube camouflaged in a natural object.