PART of a slot bunker at NRG Gladstone Power Station that hasn't been seen for decades is now visible as coal stockpiles remain low after wet weather earlier this year.
Production manager Tim Danby said the power station's slot bunker was divided into two halves.
"Our coal strategy is to blend coals from the Bowen Basin (Blackwater Rail corridor) with coals from the Callide Basin (Moura Rail Corridor)," Mr Danby said.
"Having the two corridors allows us to spread our risk, so if we have rail interruptions we can still receive coal from the other."
Mr Danby said the recent rain events had led to a reduction in coal deliveries from the Callide Basin Boundary Hill Mine.
With the Boundary Hill stocks at an all time low, one end of the slot had become exposed for the first time in several decades.
"As there was very little coal left it was a good opportunity to get some photos for training purposes and carry out inspections on the concrete structures," Mr Danby said.
With continued coal deliveries from Rolleston and limited coal deliveries now being received from Boundary Hill, it is expected coal stockpile levels will return to normal in the near future.