Fire ripped through and destroyed a 20-foot trailer off Honeymoon Bay Road on Friday morning.

Flames licked high above the trailer before firefighters with South Whidbey Fire/EMS knocked it down, sending a massive plume of smoke stretching into the sky, though it was mostly shrouded by a thick fog in the area.

South Whidbey Fire/EMS Deputy Chief Mike Cotton said a passer-by on the Freeland road reported the flames. No injuries were reported, and the property owner was not home at the time.

The greatest concern for firefighters were four propane tanks, two of which were deep inside the blaze and not discovered until they were poking through the wreckage searching for hot spots. Cotton said the two tanks inside the trailer were charred black and “hissing” when firefighters stumbled upon them. The hissing, Cotton said, was the tanks’ pressure valves releasing the flammable gas which prevents it from exploding. Two other tanks on the front of the trailer looked intact and were not charred, despite the fire swirling about them.

Flames were largely contained within the trailer itself, which quickly collapsed after emergency responders arrived around 8:30 a.m.

“With these things, there’s not much radiant heat to worry about,” said Chief Rusty Palmer, crediting the wet, cold, windless conditions for aiding their battle with the small but fierce blaze.

The cause of the fire remains unknown.

Firefighters Kim Boenish, Sean McDougald, Will Piepenbrink, Lt. Mari St. Amand and Will Suarez responded to knock down the fire and search the wreckage for flare-ups and any possible victims. Cotton was the fire district’s incident commander at the scene.