"Tom Swift and His Big Tunnel" by Victor Appleton is another thrilling installment in the Tom Swift series. In this book, Tom Swift turns his inventive talents toward solving a major engineering challenge—building a tunnel through a mountain.The story follows Tom Swift as he takes on the monumental task of constructing a tunnel through a mountain range. This ambitious project aims to connect two cities and revolutionize transportation and trade. Tom's tunneling machine, known as the Subterranean Express, is a marvel of engineering and innovation.As construction progresses, Tom and his friends encounter a series of challenges and obstacles, including natural disasters, sabotage attempts by rivals, and technical difficulties. Tom's determination, ingenuity, and problem-solving skills are put to the test as he navigates these hurdles.Throughout the book, readers are treated to a combination of scientific exploration, engineering marvels, and adventure. Tom Swift's inventions and his ability to overcome adversity make for an engaging and inspiring story for young readers."Tom Swift and His Big Tunnel" captures the spirit of innovation and progress that characterized the early 20th century. It highlights the importance of perseverance, teamwork, and creative thinking in the face of seemingly insurmountable challenges.Overall, this book is a testament to the enduring appeal of the Tom Swift series, offering young readers a thrilling and educational adventure that celebrates the power of invention and the pursuit of knowledge.