Beyond the Mortal Eye is a soundscape work that engages with the concept of deep time and our place within it. Using sounds of geological processes that are perceivable to the human ear, the installation voices a selection of slow, often invisible transformations that connect to and signify the passage of geological time. This installation is an initial practice-based experiment in ongoing research into the role of the sonic ambiances of Earth systems in communication about environmental change. It is designed to open up a space of enquiry and to fuel future research directions. This introduction to the work, by the artist, discusses the ideas behind the development of the installation.