Fire destroyed a home on an old ranch above Cazadero Sunday afternoon, an emergency fire dispatcher reported.
The fire was on remote King Ridge Road, a few miles from Tin Barn Road.
It was reported at 12:46 p.m.
The first engine, coming from Fort Ross, arrived at 1:06 p.m., according to dispatch records.
The fire may have started in the chimney and then quickly spread throughout the small home, a fire official said.
An adult couple was there at the time. No one was injured.
Firefighters responded from Cazadero, Fort Ross, Timber Cove, Annapolis, Monte Rio, Cal Fire and Sonoma County Fire.
Firefighters protected other nearby outbuildings from the blaze, according to initial reports.