Turtles, ibexes, ships, inscriptions... Thousands of engraved and painted figures intrigue visitors in the wadis of Al-Hajar Mountains. Who created these enigmatic figures and when were they made? What are their hidden meanings? For the first time, this volume tries to answer these questions. It is the result of the archaeological surveys and investigations undertaken by the author over the last ten years under the patronage of the Ministry of Heritage and Culture. In this book, the author takes the reader on an in-depth journey into the various themes present in the rock art of Oman. He offers theories on the chronology and interpretation, while exploring the landscape setting of the decorated panels and how best to research these. Several beautiful photographs and scientific tracings of the rock art accompany the text. The volume closes offering to enthusiasts and tourists a series of guided visits with GPS maps to the most interesting and visible rock art sites protected by Royal Decrees of the Sultanate.