Volcanoes and Lakes on New Zealand’s North Island
The North Island is one of the two main islands of New Zealand.
The island is 113,729 square km in area, making it the world’s 14th-largest island, with a population of 3,250,700 (June 2008 estimate). Approximately 76% of New Zealand’s population lives on the North Island.
The snow-capped peak is Mount Ruapehu, an active stratovolcano at the southern end of the Taupo Volcanic Zone.
Two lakes are visible north of the volcano: Lake Taupo (middle) and Lake Rotorua (top). The latter lies in the Rotorua Caldera, one of several large volcanoes located in the Taupo Volcanic Zone.
Its last major eruption was about 240,000 years ago, after which the magma chamber underneath the volcano collapsed. The circular depression left behind is the current caldera, about 22 km (14 miles) in diameter and now occupied by Lake Rotorua. Mokoia Island, close to the centre of the lake, is a rhyolite dome.