"She is described as being in a comfortable condition and miraculously hasn't broken any bones," police said.
National Park constable Conrad Smith said the woman was extremely lucky to be alive.
"Somehow she managed to land in a window of snow surrounded by jagged rocks. A metre in any direction and it could have been a very different story, and if her friend hadn't managed to stop his fall there would have been no-one around to raise the alarm."
Mr Smith said it the incident was a warning about the danger of tobogganing after dark in icy conditions.
- HERALD ONLINE