The Department of Conservation has waded into a fight over consent granted to mine peat from a Far North wetland.
The department announced this week it had joined Forest & Bird in attempts to protect the wetland from being mined without public notification.
Forest & Bird said it was delighted DOC had taken the stand.
Forest & Bird filed a High Court application in October seeking to overturn resource consents issued by Northland Regional Council for peat mining in the Far North's Kaimaumau wetland.
Northland Regional Council granted the consents to Resin and Wax Holdings Ltd to dig up 404 hectares of the Kaimaumau wetland to extract kauri resin and wax.
Despite Kaimaumau wetland being assessed as the second most important wetland in Northland with internationally important wildlife habitat, the council decided to limit input on the consent decision from the public or entities such as DOC.
On Tuesday, the Director-General of Conservation filed an application challenging the same notification and consent decisions.
"We are absolutely thrilled to see DOC challenge these atrocious decisions," said Forest & Bird lawyer Sally Gepp.
"DOC's call to bring legal proceedings will not have been taken lightly, and we commend DOC for taking this bold step.