A fire on Gravenhurst Parkway around 2:00am saw a full response from Gravenhurst Fire Department.
Moose FM listener Mike Pilger sent video to the MyMuskokaNow.com newsroom showing the intense fire that happened near the Muskoka Airport.
Crews responded with a pumper, rescue truck and three tankers, along with 17 firefighters.
The small building was already fully engulfed when Pilger, a  retired firefighter, came upon the scene as he came home from work. By the time emergency responders arrived, it had collapsed and was quickly put out.
No injuries have been reported and there is no dollar value attached to the loss. OPP forensic units are investigating to help determine the cause of the blaze.