Kimberley Regional Duty Coordinator Ben Mueller said the fire was caused by lightning on October 11 and has since grown to burn more than 870,000 hectares.
Volunteer firefighters, Indigenous rangers and pastoralists are battling the fire approximately 150km south of Broome, using helicopters and strategic backburning to contain the blaze.
Kimberley Regional Duty Coordinator Ben Mueller said the fire was caused by lightning on October 11 and has since grown to burn more than 870,000 hectares.
"To put that in perspective, if you were to drive around that it would be 880 kilometres,
Resort full of people under threat....
Eco Beach Resort manager Jessica Martin said they were prepared for an evacuation.
"We had about 57 people here including guests and staff," she said.
"We packed food and drink into eskies and packed wet towels.
"We had all of the guests and staff in for a safety meeting and gave everybody the opportunity to evacuate the resort."