An experienced hiker has been missing for more than 16 hours in a rugged national park in southeast Queensland.
Police say the woman in her 60s became separated from two male relatives on a track at Coongarra Rock in the Mount Walsh National Park near Biggenden about 1.30pm on Sunday.
The men walked to a nearby caravan park to alert authorities and police started a search, but could not find the woman.
The search resumed on Monday morning.
An experienced hiker has been missing for more than 16 hours in the rugged Mount Walsh National Park in southeast Queensland