Book excerpt: In The Un-Discovered Islands, critically acclaimed author Malachy Tallack takes the reader on fascinating adventures to the mysterious and forgotten corners of the map. Be prepared to be captivated by the astounding tales of two dozen islands once believed to be real but no longer on the map. These are the products of the imagination, deception, and human error: an archipelago of ex-islands and forgotten lands. From the well-known story of Atlantis and the mysteries of frozen Thule to more obscure tales from around the globe, and from ancient history right up to the present day, this is an atlas of legend and wonder, with glorious illustrations by Katie Scott.