Travel millions of years into the past, and explore worlds you might only have dreamt of, but that actually existed. From woolly mammoths to early humans, find out how plants and trees and creatures great and small shared a world very different from our own. Uncover the footprints they left behind. Starting with the last ice age and ending when the very first animals started to swim and hunt, this illustrated journey back through time is adapted from the bestselling 'Otherlands' by Thomas Halliday.