The adventurer continues his journey through the Northern Territory, exploring Nitmiluk National Park, an area twice the size of London.
Ray takes a helicopter ride over craggy rock formations, labyrinthine waterways and spectacular gorges, a landscape that hasn’t changed since dinosaurs roamed Earth.
He lands in ‘the remotest place in the world’ before trekking off in search of wildlife by the Katherine River.
He’s quickly rewarded by a laughing kookaburra and a curious monitor lizard.
8pm, ITV (not Scot & NI); Monday 30 October, 11.50pm, ITV Wales