Investigators are looking for the person or persons responsible, following another fire at Carrot Park.
Fire crews were called out late Sunday night to an outhouse fire at the park, beside the Visitors Centre.
The structure was fully involved when crews arrived and is considered a complete loss.
According to the fire department, this is the third outhouse at Carrot Park to be intentionally set on fire since August.
Anyone who may have any information on those responsible is asked to contact the RCMP.