South Australian detectives have joined the search of scrubland north of Adelaide following the discovery of a man's remains.
A member of the public discovered the remains in the popular Hale Conservation Park on Tuesday, a short distance from Williamstown.
It is believed the remains belonged to a man, who may have been fully clothed.
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The discovery left locals who visited the park on Wednesday in shock.
"From a personal point of view, quite frightening, I guess," walker Sarah Hill told 9News.
"It's a very much-loved and much-walked area."
The State Emergency Service helped in a wide-scale search for clues, while major crime detectives examined the scene.
Forensic experts will need to determine the cause of death, with long term missing persons lists also under scrutiny.
Williamstown resident said the park can be busy and was considered safe.
"It's obviously a bit odd, you know, a small town like this, you wouldn't hear anything of it," one man said.
"It's awful, very awful," one woman said
"We were initially really shocked, this is a beautiful little town ... nothing ever happens here," another woman said.
"It's so quiet, it's a beautiful place."
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