This book is the final instalment in the photography collection Lunwerg has dedicated to the four elements. With a selection of images by great international photographers and texts written by the journalist and naturalist Joaquín Araujo, the book is divided into different chapters, each featuring a monograph exploring the diversity of shapes and functions, and the importance of this magical element in all its forms. It features images of nature, traditions, festivals, ecological disasters and beliefs, in order to demonstrate how necessary the element is to human beings and how we must make use of it in a sustainable way.