RaveGeographical (UK)...an epic, perspective-shifting exploration of this world beneath our feet. It cuts paths through science, geography, anthropology, poetry, myth and experience ... The book is a glinting ice core pulled from the earth, revealing mystery and memory just as ice reveals historical temperatures and atmospheric composition ... Underland helps us see new things without being worthy or dry. I learned about places, times and people – but I also experienced them ... Macfarlane’s thoughtful, iridescent style means the book’s cold realities catch you by surprise ... Underland is vast, cross-cutting, questioning. It offers signposts, connections. At times I had to surface for breath ... a journey; a witness; an invitation not just to protect our strange and life-giving earth but to be awed by it.