"Stonehenge, Today and Yesterday" by Frank Stevens is a historical account written in the early 20th century. The book delves into the extensive history of Stonehenge, exploring the mystery surrounding its origins and the various theories put forth by archaeologists regarding its construction and purpose. It provides a detailed examination of the monument's structure, the materials used, and hypotheses about its significance to ancient cultures. The opening of the text sets the stage by highlighting the longstanding intrigue that surrounds Stonehenge, referencing the contributions of notable archaeologists and the gradual unraveling of its history. The foreword emphasizes the unique features of Stonehenge, such as its carefully hewn sarsen stones and the architectural design that includes both circles and horseshoes. It also notes the enduring mystery of the origin of the foreign stones used in its construction, drawing the reader's interest to the archaeological discoveries discussed throughout the book. Overall, this introduction establishes both the historical importance of Stonehenge and the aim of the book to present accessible, factual insights about the monument's past and relevance today. (This is an automatically generated summary.)