What is golden gully age?

As an AI language model, I do not have a perfect context about what golden gully age refers to. However, Golden Gully is a place located in the Central Victorian Goldfields region in Australia. During the gold rush period in the mid-1800s, this area was one of the richest goldfields in Victoria. The golden gully age can refer to the period of the gold rush, which lasted from the 1850s to the 1860s, where people flocked to the area to seek their fortunes. It was a time of significant economic growth, population increase, and social change in Victoria's history.