The Waitangi Tribunal has released the third part of its report on the Urewera district claim which Tuhoe will use to support their treaty settlement case with the Crown.
The report found Tuhoe people became marginalised in their homeland.
It said claimants were unable to come to grips with laws made in 1896 to create a reserve for Tuhoe. The land was stripped from them 30 years later when the Crown took much of it through aggressive buying.
Tuhoe were not opposed to the creation of Te Urewera National Park, but wanted to remain on the last lands in the heart of the park.
The park did not breach the Treaty of Waitangi, but the Tribunal found the alienation of 75 per cent of the Urewera Native Reserve mainly through ruthless Crown purchasing, on top of extensive land loss in the rest of the park, was in breach of the Treaty.