The Cockatoo Run will be back travelling through the Southern Highlands again on Sunday February 3.
It hasn't been in operation for a couple of years, due to red tape and administrative issues.
The run will start in Sydney then travel to Wollongong, Robertson and Moss Vale and then back to Sydney.
The diesel locomotive which will be hauling the train will likely be 42101.
The Cockatoo Run use to bring thousands of tourists to the region.
Ian Wallace from The Robertson Heritage Railway Station says it's wonderful news that it's back in operation.
IMAGE CREDIT: 3801 Limited