Tararua - Twin Peaks
Tararua, a. 1. Having two points or peaks.
2. Cleft, dividing into two parts. Tera e tararua marire ona hikumaro (M. 32).
Williams Dictionary
Ka haere rātou mā Te Wairarapa mā Tararua rānei.They will either go via the Wairarapa or Tararua.Or... - ...rānei
Ko Tararua te maunga.Tararua is the mountain.