At the posted co ordinates you will find a tree planted in a pretty little garden. At the base of the tree is a plaque which will tell you a little about William Rolleston, the man the township is named after. Read the plaque to find the answers to the questions below and you will be able to take a short walk to find the cache.
The tree was planted in AxxB.
How many positions is William Rolleston listed as serving in? C
How many letters are there in the first position listed? D
How old was William Rolleston when he emigrated to New Zealand? EF
Now for a bit of maths:
G=E+F
H=A+E
J=B-A
K=B+C
The cache can be found at S43 35.GHJ E172 22.KDC