About the book: 1971 / ... Black Mouth - this is how Caspian sailors, taimun fishermen and fishermen nicknamed the monstrous and fabulously rich Kara-Bogaz-Gol Bay. The Black Mouth is shrouded in terrible legends and mystery, which, according to a persistent legend, devours the shallowing Caspian Sea, swallowing its waters into the abyss. Mysterious legends live among the people about the “snake island” of Kara-Ada, which became the place of death of many revolutionaries during the civil war. In protected places, miners and brave seekers take countless chemical riches from the Caspian caches. About the harsh search for treasures and life paths, trials and adventures this book.