This book will be available for purchase in Spring 2018, if you would like to be notified when it is released please send an email to hello@duncanspeakman.net Do you notice the world around you gradually changes? There is always something happening somewhere else. It Must Have Been Dark By Then is a book and audio experience that uses a mixture of evocative music, narration and field recording to bring you stories of changing environments, from the swamplands of Louisiana, to empty Latvian villages and the edge of the Tunisian Sahara. Unlike many audio guides, there is no preset route, the software builds a unique map for each person’s experience. It is up to you to choose your own path through the city, connecting the remote to the immediate, the precious to the disappearing. In January and February 2017 Duncan Speakman travelled with collaborators across three countries on three continents, visiting environments…