He had no time to ask for help moving 450 animals from his Brimpaen property in western Victoria's northern Grampians but didn't need to.
"It was fantastic," Mr Monaghan told AAP.
"When I came back there were people everywhere. Word got around a truck was coming in to move them and they just turned up."
Locals helped him ready the flock for transport before they left to defend their own homes and properties from the blaze sparked by lightning strikes.
"When it's the dry season and dry lightning strikes, she's very much a dangerous place," Mr Monaghan said of the town.
Brett Monaghan was helped by members of the community near Wartook, Victoria. (Diego Fedele/AAP PHOTOS)
Neighbour Tylor Ross and his father were among those staying, confident they'd done everything they could to prepare.
"I reckon we should be right, it's just the embers and the ash that we're worried about," Mr Ross said.
Evacuation orders had earlier been issued in parts of the Northern Grampians over the Wallaby Rocks blaze, which prompted Wartook resident Andrew Jonas to leave.
"We're surrounded by bush that's not very defendable and we have no experience fighting fires," he said.
Residents in several communities at the southwestern end of the park were being urged to leave on Thursday morning under an emergency warning, with blazes at Victoria Range and Cavendish not yet under control.
Of most concern were the communities of Mooralla, Woohlpooer, Glenisla and Rocklands.
However authorities said activity on the northwestern edge of the fire had subsided due to weather conditions.
There was also concern fires at either end of the park could meet, particularly when temperatures soar to 40C next week.
Firefighters are battling three uncontrolled fires, including two in the Grampians National Park. (Diego Fedele/AAP PHOTOS)
Local towns are still reeling from fires in a different part of the park in December.
Cam McDonald runs the Grampians Horse Riding Centre near Mr Monaghan's land and thinks he could lose up to $15,000 in cancellations if there's a three week shutdown.
He said while the blaze will burn around his place due to fire breaks, he's counting the cost after losing $20,000 earlier this summer.
"We can't evacuate. We can't just stick 20 horses in a truck and get out, that's not possible," Mr McDonald said.
If he had his time over again, the Horsham Rural City Councillor would never have set up his business next to a national park.
"We used to have two pubs here, one burned down in 2014. The other one simply shut," he said.
"We've seen people leaving the district. The tourism industry has been decimated, not anybody's fault necessarily".
A separate fire in the state's northwest at Little Desert National Park near Dimboola is not yet controlled but many there are counting themselves lucky.
Flames came within metres of home with much of the town under threat, with one CFA volunteer of 35 years describing it as the worst he'd ever seen.
The fire claimed one home near the town, a second home further west and an event centre.
15°C