The Auckland isthmus, also known as the Tāmaki isthmus, is a narrow stretch of land on the North Island of New Zealand in the Auckland Region, and the location of the central suburbs of the city of Au
The Auckland isthmus as captured by a Planet Labs satellite in 2016
Almorah Rock Forest, an ecosystem that once covered much of the Auckland isthmus (pictured: lava rock forest remnant at Withiel Thomas Reserve, Newmarket)
Wetlands and swamps surrounded by Cordyline australis (cabbage trees / tī kōuka) formed in many of the unforested areas of the isthmus (pictured: Cabbage Tree Swamp in Sandringham, circa 1910)
Kūmara (sweet potato) was widely grown on the isthmus during the pre-European period, and stored in rua kūmara (storehouses) (pictured: storehouse pit remnants on Ōhinerau)
The Manukau Harbour is the second largest natural harbour in New Zealand by area. It is located to the southwest of the Auckland isthmus, and opens out into the Tasman Sea.
Auckland isthmus
…between two rias (drowned river valleys): the Waitematā Harbour to the north, which opens to the Hauraki Gulf / Tīkapa Moana and Pacific Ocean, and the Manukau Harbour to the south, which opens to the Tasman Sea. The isthmus is the most southern section of the Northland Peninsula. The Auckland isthmus is bound on the…
Aerial view of the Manukau Harbour
The Manukau Harbour Heads in 1960. The area in the foreground has since naturally filled with sand past the rock to the right of the photo.