FTP, name this island that is home to Christchurch and is separated from a smaller and equally unimaginatively named island by the Cook Strait.
In December 1888 an expedition on this island charting a tributary of the Mica Burn next to Leaning Peak was lost.  Afterward, the river was known as Disaster River, since Professor Brown, who set out from a tarn fed by the Spey River, was never seen again. Lake Manapouri is smaller but deeper than this island's largest lake, Te Anau, and lies in the fiordland in the southwest, a region separated from the Dunedin and the Canterbury Plains in the East by a mountain range containing Mount Aoraki, also referred to by the same name as the strait opposite Foveaux strait, which separates it from Stewart Island.  FTP, name this island that is home to Christchurch and is separated from a smaller and equally unimaginatively named island by the Cook Strait.
In December 1888 an expedition on this island charting a tributary of the Mica Burn next to Leaning Peak was lost.  
South Island or Te Wai Pounamu