You need to find the caches at TC#1 and TC#2 before you attempt this one. The cache is not at the posted co-ordinates but can be found at S31°45.8BC E115° 45.9DE
A = Number at TC#1
B = A+1
C = A-1
DE = Number of holes at TC#2
This one is a bit harder to find than the first two. Happy Tree Climbing!
Congratulations ssclan on being the FTF this final cache in the series. Can't believe you looked for it in the dark!!