In the 2000s a number of predator-proof fences were built to create mainland islands – sanctuaries for native animals. This fence is at Tawharanui Open Sanctuary, east of Warkworth. It was completed in 2004, with a length of 2.7 kilometres. The cap stops predators from climbing over it, and underground mesh prevents them from digging their way in. The spiral leads predators running along the fence into traps and bait stations. North Island brown kiwi, whiteheads and robins have been introduced to this sanctuary.
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Tawharanui Open Sanctuary Society Inc
Photograph by Alison Stanes
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