Gates of the Arctic: Life on the River: Home to bears, moose, wolves and endless wilderness, this northern Alaska national park is one of the last untamed places on the planet. S2, ep 6 7+
Great Smoky Mountains: Seasons of Change: A mecca for 9 million outdoor lovers a year, it's known for its joyful spring flowers and colourful autumn trees. 7+ S2 ep5
Gates of the Arctic: Life on the River: Home to bears, moose, wolves and endless wilderness, this northern Alaska national park is one of the last untamed places on the planet. S2, ep 6 7+