Broadcast 26 August 2007, the final programme examines Snowdonia in Wales. Snowdon itself attracts 8 million visitors a year. 350,000 of them go there to reach the summit, and of these, 150,000 do so via the Snowdon Mountain Railway. The human presence has left its mark: Rhys Jones accompanies Robin Kevan, a retired social worker who collects Snowdon's litter. Also, many people choose the peak as a place to scatter the ashes of deceased loved ones. A mountain rescue team operates out of Llanberis, and Rhys Jones volunteers to be airlifted during one of its practice sessions. Near Llanfairfechan, the presenter accompanies a local farmer who rounds up ponies using quad bikes. Llyn Idwal is a lake area that was once covered by forest and scrub — but no longer, thanks to sheep. However, it does play host to alpine plants, and particularly those that also grow in the Arctic. In Dinorwic Quarry, Rhys Jones meets with Johnny Dawes to witness him scale a near-smooth, -high slate wall with apparent ease. The region's former slate industry is highlighted, and under the shadow of Cadair Idris, two entrepreneurs have set up a business in a former tool shed at a disused mine. They collect sheep droppings from the surrounding area and recycle them to make paper. Finally, Rhys Jones accompanies George Band, the youngest member of John Hunt's successful 1953 Mount Everest expedition (and now aged 77), on an ascent of Tryfan.