Temporary maximum lake area after the 26,500 years ago Oruanui eruption (dark blue shading). Before the volcanic material dam near the present lake outlet failed the lake flowed via its old Waihora outlet into the Mangakino Stream and on to the Waikato River.
Approximate surface projection NIFS
For upper north island in development as ages checked and spelling mistakes or literature inconsistencies resolved as of 24th Jan 2023
Map of known active faults (red) and faults inferred to be active (pink wider line) in Otago area. [1]
Map rendered with different coordinate assumptions given our round earth to show bug features