The family of missing mother Tanja Ebert is due to fly into Adelaide from Germany on Thursday evening as the search for her body continues.
A second day of extensive searching on the Ebert family's Mannahill sheep station has failed to find any sign of Tanja.
With the help of a mining expert from the Environment Department, a search team has looked at 20 wells and mines using a special camera that is lowered into water.
The team returned to the property on Wednesday, believing Ms Ebert had been murdered and her body dumped down a shaft on the massive 410 square kilometre property.
Police say they always expected the search would be tough going and that the search team are still confident of finding Ms Ebert.
The search will continue on Friday with extra resources including mounted police.
While they scour the property, Tanja Ebert's husband - and suspected killer - will be farewelled at a funeral service after he took his own life two weeks ago.
It is understood that Ms Ebert's mother and other loved ones from Germany will be there.