"Establishing these sanctuaries in this rugged, remote and inaccessible area is ambitious but the success we're having tells us that the blood, sweat, tears and capital involved is absolutely worth it," Mr Hall said.
"The restoration of life to an area which had been badly knocked about by predators is a joy to experience. You only have to go several metres beyond the treeline to hear the sounds of our native birds and to feel the ngahere mauri [forest lifeforce]. It's wonderful."
The FLR Trust is fast carving out a name for itself as one of the most prolific and successful kiwi conservation initiatives in the country.
In addition to the Maungataniwha Kiwi Project the trust runs eight native flora and fauna regeneration projects on four properties in the central North Island and in Fiordland National Park.
These projects include the re-establishment of native plants and forest on 4000ha currently, or until recently, under pine - the largest such venture in the country.