Mount Eden, a scoria cone and surrounding suburb in Auckland City, is a dormant volcano whose summit at 196 metres is the highest natural point on the Auckland isthmus. The majestic bowl-like crater is 50 metres deep and last erupted 28,000 years ago.br/br/The city of Auckland can be seen beyond. It is one of the few cities in the world to have harbours on two separate major bodies of water. The central part of the urban area occupies a narrow isthmus between the Manukau Harbour on the Tasman Sea and the Waitemata Harbour on the Pacific Ocean.