The cache is located at a five way insection alongside a railway line and an irrigation canal.
There are many intersections like this on the Canterbury Plains connecting small farming communities. This one is located at Sandy Knolls.
A google search into the origins of the name found little useful information other than:
In the old days the name Sandy Knolls was spelt in several different ways; Sandy Knowles, Knowles's Land, and so on.
References also to a tradition that an Alexander Knowles once lived there. There may have been a shepherd of that name there for a time and a station named after the sandy hummocks beside the riverbed nearby.