Are there any genuinely wild places left in England, Scotland, Ireland, and Wales? That is the question that writer Robert Macfarlane poses to himself as he embarks on a series journeys through some of the archipelago's most remarkable landscapes. As he climbs, walks, and swims in all manner of weather - sleeping on cliff tops and remote beaches, deep in snowy wildwoods and ancient meadows, and bathing in phosphorescent seas or hiking frozen rivers at night - his understanding of nature is transformed. With lyrical elegance and passion, he entwines history and landscape in a bewitching evocation of wildness and its vital importance.