Ngati Kahu is using a precedent-setting decision to ask the Waitangi Tribunal to force the Government to hand back forestry land and other state-owned farms.
It is a move which affects four other Far North iwi, who are about to settle Treaty grievances in their region.
The tribe last month asked the tribunal to use rarely employed "resumption" powers to order the Crown to hand back land.
Ngati Kahu wants about 20 per cent of Te Aupouri State Forest, Rangiputa Station, Kohumaru Station, and other state-owned land.
In total the land area represented 5500ha, said Te Runanga a Iwi o Ngati Kahu spokeswoman, Professor Margaret Mutu.