A Noble Park North man is missing in the Werribee Gorge State Park.
Police are searching for the man in Pentland Hills after he failed to return from a hike on Sunday 10 December.
Investigators have been told the 35-year old intended to complete a 10km walk around the Werribee Gorge Circuit Track.
It is believed the man, who is a semi-experienced bushwalker, attended the western lookout about 3.30pm but failed to return home.
Police found his car parked at the state park. The air wing conducted a flyover of the gorge in the early hours this morning to no avail.
The search was to continue.
