missing. Obviously if he's been outside without shelter or food we'd have serious concerns for his safety after this period of time." Neale failed to show up for a pre-booked tour of some nearby caves... raising an alarm on Saturday for his whereabouts. Neale's father, Richard Cass, arrived in Australia from the UK on Friday to help find his son. [Richard Cass, Missing Backpacker's Father]: "Obviously, I just want to concentrate on just finding my boy. He's very tolerant of cold and if ...