The Atlas Mountains stretch for over 1,500 miles across the Maghreb of North-West Africa, from Morocco through Algeria to Tunisia. The origin of the name is unclear but seems to be generally accepted as having been named after the Titan. Herodotus states (The Histories, Book IV. 42-43) that the inhabitants of ancient Mauretania (modern Morocco) were known as Atlantes and took their name from the nearby mount Atlas. Jean Gattefosse believed that the Atlas Mountains were also known as the Meros and that a large inland sea bounded by the range had been known as both the Meropic and the Atlantic Sea. Furthermore, he contended that Nysa had been a seaport on this inland sea.