Miners Flat is a small bush campground situated on the Big River in the Upper Big River State Forest, Victoria, approximately 130 km north-east of Melbourne and 30 km east of Marysville.

The site is free to use and pet friendly, but carries no facilities, so campers must be fully self-sufficient. Access requires a 4WD vehicle, and the track down to the camping area is notably steep and narrow.

The site suits tent-based camping and 4WD trailers. It sits within a broader network of campgrounds spread throughout the Upper Big River State Forest, a popular recreation area centred on the heritage-classified Big River and its scenic forested valley.