A flash flood in the desert is a spectacular sight. However, it may endanger the lives of careless travelers. A person finding himself in the path of a flood, may discover that the trails are covered by water, and the steep rocky slopes become slippery waterfalls. In certain terrain conditions, such as in narrow wadis or gullies, a traveler will not always be able to find a safe spot, outside the flood path. Staying in the path of a flood poses a lethal threat. Travelers hiking in the desert must keep up to date with information concerning flood threats. In addition, during large-scale floods, wide streams with large drainage basins which cross roads, may overflow. Drivers who underestimate the force of the flood current and try to cross the flooded areas, can get stuck or carried away with their vehicles. Today, many flood paths in the Negev and the Judean Desert are bridged by overpasses. However, there are still quite a few roads which cross flood paths with no such provisions.