The Negev is a large desert that covers the entire southern half of Israel. The least populated area in Israel, it is a home to (among others) the nomadic desert people known as the Bedouin. The Negev offers some truly breathtaking scenery and is home to some fascinating sites and places. The Negev covers 55 percent of the state's territory and is inhabited by some 379,000 Jews and 175,000 Bedouins (Bedouin is an ancient word referring to the term Desert Man). Contrary to the usual view of a "desert," the Negev is not covered with sand. Rather, it is a melange of brown, rocky, dusty mountains interrupted by wadis (dry riverbeds that bloom briefly after rain), and deep craters. The area was once the floor of a primordial sea, and a sprinkling of marine snail shells still covers the earth here. Aside from the natural wonders, the Negev plays host to a great number of ancient sites, displaying the rich history of this crossroads of trade between Asia, Africa, and Europe.