Environmental activist Miranda Gibson will consider ending her record-breaking tree-sit if logging is halted in Tasmanian forests nominated for World Heritage protection.
Ms Gibson had one foot on her 60-metre ladder when when Federal Environment Minister Tony Burke nominated 170,000 hectares for World Heritage listing last month.
But she says continued logging in those forests has forced her to prolong her 14-month Tyenna Valley protest in the state's south.
"It is a remarkable achievement if we do get these forests protected and it absolutely would be a point at which I would consider coming down," Ms Gibson told AAP via Skype, at the launch of a new campaign involving her green group Still Wild Still Threatened.
"Obviously it hasn't transpired that way because logging is still going on, so there's absolutely no certainty that these forests are protected."
Several environmental groups outside Tasmania's forest peace process say logging has continued inside the nominated area.
They have launched a social media campaign calling on Prime Minister Julia Gillard and Mr Burke to immediately put a stop to it.
Confirmation of a World Heritage listing is expected in June.
Ms Gibson said the final look of the state's forest peace deal legislation, and whether it is passed, would be another factor in her decision about when to come down.
The 31-year-old school teacher has battled snow, and more recently the threat of nearby bushfires, during her stay.
"Luckily the winds have been in the opposite direction, I haven't had any effects of smoke up here," she said.
"Obviously we're still in the fire season with a little bit to go, so I'm keeping an eye on that all the time.
"I have a really good fire evacuation plan ready to go in case I do need to leave."
She said she would turn her attention to other environmental battles in Tasmania, such as the Tarkine, when she eventually ended her protest.
"I am looking forward to the day when I can get to the ground," she said.
"I definitely hope that the federal government are going to be accountable to the decision that they have just made.
"That means that day when I come down, when as a community we can celebrate these forests, will come sooner rather than later."