A simple enough puzzle, I have to admit this certainly isn't original though, have seen it a few times here and there. But I have always enjoyed the nature of it. The final location is certainly original though. I was scouting around for another location for another sort of cache and this popped up as well, so why not use both locations - 2 out of 2 for me. But for you, 3 out of 4 given, but you need 4 out of 4, will you be able to see what I mean, I'm sure you will eventually. Have fun fellow cachers.
S36 52.995 E174 42.678 S36 53.995 E174 42.678 S36 53.995 E174 43.708