Beyond where u see brown hill, is the remnants of a volcano. I was told when the British were fighting the Maoris, the Maoris hid there. The British barricaded them, but they couldn't force them to come out for months. The British found the Maoris had burrowed a long distance to the reservoir. The Maoris caught eels and had plenty of water.
https://abcwednesday.com/