A naturally occurring marsh fire that lit up the night sky at Point Pelee National Park is now out. 

The Leamington Fire department shared video of the fire showing the size of the area affected. Fire officials let the fire burn out, saying it was not considered suspicious.

Crews first responded to the blaze shortly after 8 p.m. Wednesday. Due to the size of the fire crews took a defensive postion in an attempt to protect the boardwalk.

Leamington Fire Chief Chuck Parsons says the fire was half a kilometre long, adding that the priority was to protect the park's infrastructure.

About 125 hectares of marsh was burned by the fire, according to Leamington Fire. But Parks Canada officials say there was no damage done to the boardwalk.

In a tweet to CTV News Leamington Mayor John Paterson said the fire posed no danger to the public.

The park did have to be evacuated as a result of the blaze.

Parks officials say Point Pelee National Park will re-open to the public at 7 a.m. on Friday.