Entdeckung der blauen Grotte auf der Insel Capri (Discovery of the Blue Grotto on the Isle of Capri) is an 1838 book by German writer and painter August Kopisch in which he describes his 1826 rediscovery of the Blue Grotto in Capri together with his friend Ernest Fries. The book sparked interest in the island among the Romantics, particularly in Germany, and introduced the world to the Blue Grotto, both as a tourist sight and as an iconic symbol for the island.