This cache is not located at the given coordinates. There are clues to find and a puzzle to solve to reveal the final coordinates.
All the clues relate to Wainuiomata and can be completed with the help of google or talking to knowledgeable locals.
Once you have completed the puzzle the coordinates will take you to an important historic location in Wainuiomata, where you will need to locate the cache and sign the log book. Logs not corresponding to the log will be deleted.
Final cache coordinates are;
S 41 16.ABC
E 174 57.DEF
Questions as follows;
When was the first church built in Wainuiomata? https://www.coastroadchurch.nz/ 186G G = A
What year did Richard Prouse die? 18H5 H = B
What year was the Morton dam completed? 1IJ1 I + J - 4 = C
Work on the Wainuiomata Tunnel began in which year? 193K K - 1 = D
James McKerrow was the surveyor general of NZ, Mt McKerrow in the Rimutaka Forest Park is named after him, what year did he die? 19LM L + M / 5 = E
The Rimutaka Forest Park Trust was formed in which year? 198N N - 2 = F
CHECK SUM; A + B + C + D + E + F = 28
Good luck!!