Big Nellie Mountain
| Big Nellie Mountain | |
|---|---|
Big Nellie Mountain, photographed from Little Nellie Mountain | |
| Highest point | |
| Elevation | 542 m (1,778 ft) AHD |
| Coordinates | 31°42′02″S 152°31′20″E / 31.700556°S 152.522222°E |
| Geography | |
Location in New South Wales, Australia | |
| Location | Taree, New South Wales, New South Wales, Australia |
| Geology | |
| Rock age | Miocene |
| Mountain type | Rhyolite or Trachyte |
Big Nellie Mountain is a volcanic plug in the Mid North Coast region of New South Wales, Australia. It is situated 272 kilometres (169 mi) northeast of Sydney, within Coorabakh National Park.