Kawakawa business owners say the town could slip back into decline if its vintage railway shuts down.
A decade ago the town's main street was lined with empty shops and its future seemed bleak - but it has since undergone an extraordinary revival, thanks to the twin attractions of the Hundertwasser toilets and the railway.
However, a volunteer shortage at the Bay of Islands Vintage Railway Trust means the group is struggling to keep the trains running through the town's main street.
Operations manager Mike Bradshaw has warned that the railway could be forced to close if the situation does not improve.
The shortage of firemen, whose job it is to shovel coal and keep an eye on water levels and steam pressure, is especially acute. The trust currently has six engine drivers it can call on, but just one fireman.