Ruth Langford and Linton Burgess took their children deep into the Florentine Valley, seeking the Ice Age caves of their ancestors.
"We called out to the old fellas," Ms Langford said. "We let them know we are still here."
The Tasmanian Aboriginal families then drove along a highway running through the state’s Wilderness World Heritage Areas to look out over the wild Upper Florentine.
Beneath its forest cloak lies a cave that once yielded human remains estimated by archaeologists to be 12,000 years old.
According to the Abbott government, this cave, and the 7000 hectares of tall old-growth eucalypt and rainforest around it, should lose their World Heritage status.
Having had 150 hectares logged, it is one of the areas in the 74,000 hectares listed last year that should be excised from the World Heritage Area, according to Richard Colbeck, parliamentary secretary to the Minister for Agriculture.
"It is an embarrassment to the World Heritage process, and compromises the outstanding universal values of Tasmania’s original World Heritage estate," Senator Colbeck said.
The government will pursue the wind-back request at the annual meeting of the World Heritage Committee in Doha, Qatar, next week.
As lobbying intensifies, Ms Langford is preparing to leave for Doha to fight for continued protection.
"The Tasmania WHA is one of only four combined cultural and natural landscapes on the World Heritage List, anywhere on Earth," she said.
"That is the level of respect the world community shows our precious heritage. Yet the Abbott government, and [Tasmanian Premier Will] Hodgman Liberals are proposing to guarantee further destruction."
The World Heritage Committee has three times asked Australia to properly assess the Aboriginal cultural values of the WHA, she said.
In its dying days, the Rudd government allocated $500,000 for the task, but no work was done, the Environment Department told a Senate committee.
This lack of a cultural assessment was another reason why the extension of the heritage listing should not have gone ahead, Senator Colbeck told the ABC.
Ms Langford, secretary of the Tasmanian Aboriginal Centre, said the government was denying Aboriginal people basic acknowledgement.
"We have a continued relationship and custodianship of land which the global community says is of outstanding universal value. Our cries, our ability to add to the value of this story, are being totally ignored."
Linton Burgess asked for increased protection, and for the Aboriginal community to take control of the cultural assessments, and be given meaningful custody of the Ice Age heritage.
Ms Langford said that for the first time since Tasmania’s 1983 Franklin River protection, Aboriginal people were formally campaigning with environmentalists to protect their land.
Activists will fly out to Doha include seasoned international environmental lobbyists Alec Marr and Geoff Law, and World Heritage scientific values expert, Peter Hitchcock.
They expect to tell members of the 21-nation World Heritage Committee that all of the 74,000-hectare area adds to the area's integrity, and according to Environment Department figures, only 4 per cent of that has been heavily disturbed.
The Environment Minister, Greg Hunt, said he would not be attending the meeting, and has ruled out "horse trading" with members of the committee to achieve the wind-back.