Book I of The Well of Echoes. Tiaan, a lonely crystal worker, is using a new crystal when she begins to have extraordinary visions. The crystal has woken her talent for geomancy, the most powerful of the Secret Arts, and the most perilous - a magic that humanity's allies and enemies alike are desperate to control but it is deadly to the user. Falsely accused of sabotage by her rival, Irisis, Tiaan flees for her life. She is captured by the alien lyrinx Ryll, who plans to use her in his dreadful flesh-forming experiments. Only geomancy can save her and she follows her visions all the way to Tirthrax, greatest peak in the Three Worlds where a nightmare awaits her. Cover art by Nick Stathopolous. https://cosmiccauldronbooks.com.au/p/tetrarch-ian-irvine/