Plans have been lodged for a €200 million tunnel under one of Dublin Airport's runways.
It was first proposed a number of years ago and was due to be operational by 2024 but was delayed because of the pandemic.
The twin cell tunnel will run under the less used Cross Wind Runway and will be used by airport vehicles, like fuel and cargo trucks, shuttling between terminal one and new planned aircraft stands.
In a statement, the daa says the underpass is needed to improve access and safety on the airfield "allowing for the segregation of aircraft and vehicles, and the safe movement of vehicles to the West Apron, which is restricted following the opening of the new Northern Runway."