True, but when you look at the Grey River on that map it does collect drainages and run parallel to the #AlpineFault / plate boundary before it finally reaches the sea way to the SW of where it its catchment heads are

I'm moving so I have to give up some of my rock collection (apparently). Fortunately I can think of a few people locally who'll appreciate my #AlpineFault #mylonite ⚒️