The book "100 Great Mysteries of the Underground World" by the famous traveler and researcher of the unknown, Alexander S. is a fascinating journey into the depths of our planet, where we will discover strange and mysterious worlds that are hidden from prying eyes. The author has collected a unique selection of stories about the most mysterious and little-known places on Earth, where people have never been before. From the underwater caves of the Mediterranean to the labyrinthine tunnels of the Himalayas, this book will take you on an incredible journey through the most remote and inaccessible corners of our planet. In this book, the reader will find themselves in the midst of awe-inspiring landscapes, where they will encounter ancient civilizations, lost cities, and mysterious creatures that have been forgotten for centuries. Each story is accompanied by stunning photographs and detailed maps, which will help to immerse the reader in the atmosphere of the described place. The author's personal experiences and impressions of these places will make the reader feel like they are right there with him, exploring the depths of the earth together.

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