A young family has been taken to hospital, after a tree fell on their tent at the Nanga Mill campsite in Lane Poole Reserve.
About 3.30am, the campground near Dwellingup was thrown into chaos when the large pine tree fell on the sleeping family.
Its believed fellow campers rushed a man, woman and infant who sustained several broken bones, to hospital.
At 5.20am, the baby girl was transferred to Perth Childrens Hospital by St John Ambulance, where she is in a serious but stable condition for sustained head injuries.
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The mother had to be taken to Fiona Stanley Hospital, however, both parents have since been discharged from hospital.
A St John Ambulance spokesman said their crews didnt receive a triple zero call from Lane Poole Reserve incident but were required for transport between hospitals.
A Department of Biodiversity, Conservation and Attractions spokeswoman told the Mandurah Mail the incident was being investigated and the area had been taped off to restrict public access.
The department is aware of an incident involving a fallen pine tree at Nanga Brook campsite, she said.
The department was alerted to this incident by WA Police Force, with the department providing assistance to the family and police.
Campers more than 50 metres away could heard the tree hit the ground.
Its believed the familys dog was killed in the incident.
The department and police will continue to investigate.
Nanga Mill is the largest campground in the area, hosting various sized sites sheltered by a grove of tall pine trees.
Wind gusts on Sunday morning reached 41 kilometres an hour with heavy rain falling throughout the night.
