The Greenstone River is a scenic waterway located in the South Island of New Zealand. It flows through the stunning Mount Aspiring National Park, known for its breathtaking landscapes and diverse wildlife. The river is popular for activities such as fishing, kayaking, and hiking along its banks. The river originates from the Greenstone Valley and eventually merges with the Dart River. Its clear waters are fed by glacial melt, making it a vital resource for the surrounding ecosystem. The Greenstone River is also significant for local Māori culture, as it holds historical and spiritual importance.