Police are continuing to search for a Perth man who has been missing since Friday in rough West Australian terrain.
Steven Allison, 43, left his home in Clarkson, Perth, in his black Nissan X-Trail on Tuesday.
His vehicle was found more than 500km north of Perth on Friday, on Coolcalalya Road in Ajana.
Today, SES crews and police will recommence their search of nearby bushland on foot and in four-wheel drives.
Police divers will search waterways in the area later this afternoon.
An earlier land and air search failed to locate Mr Allison.
He is described as fair-skinned with a medium build and greying hair, and was last seen wearing a white t-shirt, dark jumper, denim jeans and dark shoes.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000.