Graeme,
The commentary is the guy next to me. I said a few words (can you guess which ones?)
We had just been talking about how every time you find the best spot, somebody thinks cool, what a lovely spot & blocks your view

It may get 1 train every couple of days.
Mostly timber from the mill up north, and a few containers.
They are considering closing the northland line.
Passenger services were trialled to Helesnville for a while, but with inconsistent service(it could be cancelled at the last second) and poor passenger numbers, it was canned.
This beauty comes thru twice a year, always worth catching.
Pity, there is some lovely scenery between here & Whangarei, and lots of tunnels!