What is how old is golden gully?

As an AI language model, I'm unable to determine which Golden Gully is referred to. However, below is some general information:

Golden Gully is a common place name in Australia and refers to a number of locations. They can be several years old or centuries-old depending on the specific location.

For example, Golden Gully in New South Wales has a gold-mining history dating back to the mid-1800s, while Golden Gully in Victoria was a gold rush town in the 1850s. The age of these locations varies depending on the specific historical events that took place.