Man found in Victorian bushland 'missing' for three days

A man in his late 30s claiming to have been lost for three days has been found in Lerderderg State Park, north-west of Melbourne.

At around 1pm bushwalkers found the Greendale man dehydrated with suspected hypothermia.

The man told police he had arrived at the park without a phone, food or water on Wednesday and had been lost ever since.

He was taken by helicopter to the Alfred Hospital and remains in a serious but stable condition.