"The Martian Obelisk" is a science fiction book by the experienced writer Arthur Clarke. In this work, the author talks about a mysterious obelisk that was found on Mars by expeditionary colonists. Its origin and purpose remain unknown, but its influence on people is slowly manifested through strange and unexplained phenomena. In The Martian Obelisk, readers are treated to Clark's sophisticated writing style, as well as his philosophical reflections on man's place in the cosmos and the encounter with the unknown. This book invites us to discover new depths of space and time, to think about what is hidden beyond our understanding. "The Martian Obelisk" is an exciting journey into the world of science and mysteries, which will leave many questions in the reader's heart.