The Zambian government confirmed to Reuters on Wednesday a previously undisclosed detail - that the World Wildlife Fund (WWF) provided a blueprint last year on how conservation pledges could be part of the deal.
In their simplest form, debt-for-nature swaps replace expensive bonds or loans with cheaper financing, usually with the help of a credit guarantee from a multilateral development bank.
"The Ministry of Finance and National Planning has received a proposal from the World Wildlife Fund regarding the consideration of debt-for-nature swaps," the ministry said in an emailed response to whether it was looking at a swap.
WWF's Zambia country head, Nachilala Nkombo, told Reuters that the most recent talks with the government took place last month.
The Victoria Falls, the country's main tourist draw, have been reduced to a trickle at times in recent years. Farmers have see crop yields plunge, poaching remains a scourge and deforestation rates are among the worst in the world.
"That is somebody's job, somebody's food and that is the country's future at risk," Nkombo said.
While some of Zambia's private sector bond holders are expected to be open to the idea, it is not known where China, France and other key 'official sector' creditors stand, given that talks have already dragged on for two years.
Sri Lanka, another Common Framework restructuring country, has said that it would like to do a debt-for-nature swap and with Zambia still hoping to wrap up its deal this year it would likely set a precedent.
The idea has not been factored into the International Monetary Fund's current debt sustainability analysis but that wouldn't prevent it being added later, especially if creditors made it clear that they might back it.
"We will be considering all debt restructuring options that are in the framework (G20 Common Framework)which falls within the DSA (debt sustainability analysis) parameters... and that are acceptable to all parties," the ministry's response added.
International Monetary Fund head Kristalina Georgieva will visit Zambia in two weeks. Her trip will coincide with the country's rationing of electricity supply to mining firms due to critically low water levels of the country's hydroelectric dams that provide most of its power.
The debt-for-nature plan is an approach that helped both Belize and Seychelles secure write-downs that put tens of millions of dollars into ocean protection and conservationists see Zambia, known for the iconic Victoria Falls, as an obvious candidate.