| Martyr River | |
|---|---|
 | |
| Location | |
| Country | New Zealand |
| Physical characteristics | |
| Source | |
| • location | Olivine Range |
| Mouth | |
• location | Cascade River |
| Length | 20 kilometres (12 mi) |
The Martyr River is a river of the West Coast Region of New Zealand's South Island. It flows generally northwest from its sources in the Olivine Range, joining its stream with the braided paths of the Cascade River 10 kilometres from the coast. New Zealand's Alpine Fault, the boundary between the Australian and Pacific tectonic plates,[1] is exposed in the banks of the Martyr River.[2]
- ^ Department of Geology. "Alpine Fault, New Zealand". www.otago.ac.nz. Retrieved 20 January 2023.
- ^ Cooper, Alan. "The Alpine Fault beside Martyr River, South Westland". teara.govt.nz. New Zealand Ministry for Culture and Heritage Te Manatu Taonga. Retrieved 20 January 2023.