New Zealand's many distinctive landforms are packed into a small space. Geoff Chapple, author of Te Araroa: The New Zealand Trail, set out on a year-long journey to find out why, and to seek out the shifting forces that shape them. For company, he chose to walk with geologists and the artisans who work the rock. The journey took him back through geology's global history and onward from end to end of New Zealand. Terrain is the result – a lucid, personal and sometimes funny account of New Zealand's most astonishing landscapes. Their stories and revelations are a prompt to look more closely at the ground we walk on.