Barry Mill is one of the least visited NTS properties
The manager of a 19th Century tourist attraction in Angus has warned local people they must "use it or lose it".
Barry Mill, near Carnoustie, could close if the National Trust for Scotland (NTS) cannot find other sources of funding for the property.
The current mill was built in 1814 and is a working example of a traditional water-powered oatmeal mill.
At a public meeting, it was decided to set up a Friends of Barry Mill steering group to try to save the property.
The mill only attracts about 2,000 visitors a year and is one of the least busy NTS properties.
Property manager Peter Ellis wants local people to bring friends and family to the mill, and also hopes to attract more school trips.
He said a lot of history would be lost if the mill closed down.
"It's one of the last working mills left in the whole of Scotland, and we believe it's one of only three that the paying public have access to on a regular basis," he said.
It is the last working water-powered meal mill in Angus and business only ceased in 1982.
"We have records that go back to 1539 and there are people on the original documents whose surnames are still in the community," added Mr Ellis.
"We think it's very important to keep an example of what at one time would have been a very commonplace activity. Every community would have had a mill because meal was the fundamental basis of the diet."