The search for a man who failed to return from a walk in the Mt Holdsworth area on Monday has been called off for the night but police say it will resume on Wednesday.
Michael MacGregor was last seen at the Rocky Lookout at around 12.20pm, police said in a statement.
MacGregor was wearing shorts, a hoody and possibly a hat.
Anyone in the area around midday yesterday who may have seen him was asked to contact police.
A person wearing orange and sitting at the lookout was seen in the back of a video MacGregor posted on social media at the time and police would also like to speak with this person to see if they can help.
Anyone who has seen MacGregor or has information on his whereabouts was urged to call police on 111, quoting event number P055522968.