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"It's quite a tragic scene. We do have a girl who is walking out at the moment and is clearly extremely distressed," he said, adding that the area of the family bushwalking track down a valley was extremely dangerous and unstable.

When they go bushwalking for example, he likes to power ahead while Michael spends hours taking photographs.

To scare away snakes, Lim relies on her Australian bushwalking experience by deliberately walking slowly and speaking loudly.

The search effort included mounted police and police aircraft, specialist bushwalking teams, sniffer dogs and volunteers.

Neil Parker, 54, was bushwalking alone near Brisbane on Sunday when he slipped, leaving his wrist broken and lower leg "clean snapped in half".