THE ACTIVE VOLCANOES OF NEW ZEALAND 



695 



lines are supposed to cross the "Maori" line at their respective 

 points of greatest volcanic activity. Running practically parallel 

 to the fissured zone mentioned above, there is another zone con- 

 taining numerous extinct or dormant volcanoes stretching along 

 the eastern border of the island from the great Mount Egmont 

 through the Auckland district, where over sixty craters, mostly of 

 small magnitude, appear. There seem to have been, also, another 

 line of disturbance and a great fault running from the north-central 



Fig. 2. — Map showing the course of the great fissure 



part of the island nearly northwest to Hauraki Gulf and passing 

 through the Waihi mining district. The prominent scarp of this 

 fault may be seen from Morrinsville Junction in going from Auck- 

 land to Rotorua, and it is necessary to ascend this steep slope 

 to reach the plateau before arriving at Rotorua. The streams 

 descend rapidly over this scarp, which is a prominent physiographic 

 feature of the landscape. This graben fault has aided in producing 

 the lowland stretching from Hauraki Gulf toward the central 

 portion of the island. 



