The rescued climber, who became trapped at Mt Arapiles on Thursday afternoon, has been flown to a Melbourne hospital and is in a serious condition.

Ambulance Victoria said a man was flown to the Royal Melbourne Hospital by the Air Ambulance helicopter after an incident at Mt Arapiles yesterday afternoon.

The man was flown to Melbourne at about 7pm last night and remains in a serious with upper body injuries.

Stawell SES controller Alan Blight said the Horsham, Stawell and Ararat SES responded to the incident to help rescue the man from the cliff face.

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Mr Blight said the man was about 30 metres above the ground and the cause of the incident is unknown at this stage.

Mr Blight said about 8-9 SES officers were involved with the rescue including others from the FRV and CFA.

"The biggest challenge, especially in what they call a mid-face pick-off is accessing the person," he said.

"So the SES have to set scaling equipment and abseiling gear to get down and assess the person."

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"And you can imagine working with a team at those heights, safety is obviously a big issue."

Yesterday emergency services were called to Mt Arapiles at around 2:30pm, to help rescue four climbers.

They were called to the Centenary Park Access Track at Mt Arapiles after a man slipped and fell and became stuck halfway down.

The fallen climber needed a more complex rescue, and was reached by SES by 4:47pm.

More updates to come.

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