Discover our world through maps: Which countries does the Sahara span? Where exactly is the Mariana Trench located, and where does the Nile actually originate? This comprehensive reference work presents the world in up-to-date maps of continents, countries, and oceans. This makes it easy to answer these questions. The extensive index aids in navigation. The universal atlas is a faithful companion for both young and old explorers who wish to discover the world in school, university, or during leisure time. Explore underwater mountains with the 3-D seabed maps. A comprehensive index ensures user-friendly handling.