Previously published as Subterranea : discovering the Earth's extraordinary hidden depths in United Kingdom by Wildfire in 2020

Part 1. Creation -- Part II. Ancient history -- Part III. Modern history -- Part IV. Today

Subterranea is where the world's remaining mysteries are yet to be found. For millennia, across nations and cultures, it has been a hotbed of fantastical stories. It's where humans have kept their most sacred treasures and their darkest secrets. It's where we have found evidence of our past and may, at some point, find an escape route for our uncertain future. But what would we find there today? From the underground cities of Cappadocia to smuggling tunnels on the US-Mexico border, caves full of tiny blind dragons and a seed vault located 1300km inside the Arctic circle, Subterranea demonstrates that the world below our feet is every bit as vivid and evocative as the world we see around us