Aside from navigation, you could use your paper topo map as toilet paper (beware of paper cuts); as a giant cigar; as a blanket; or as a bib while you're snacking, so you don't get crumbs on your brand new hunting jacket.
Have you looked at the map 'key/legend'? There will always be one on the paper versions, and I'm pretty sure there's one on New Zealand Topographic Map - NZ Topo Map...it'll help you identify any map features which may be unique to our topography.
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