Picture of dry stream bed landscape stones arrangement

Quick answer：

Dry stream bed landscape stones are used to create the appearance of a natural streambed without the need for water. These stones are typically placed in a garden or landscape design to mimic the look of a flowing river. The arrangement of the stones can vary greatly, often involving the use of different sizes and shapes to simulate the natural flow and erosion patterns of a real stream. These features are often used in xeriscaping, a landscaping technique that focuses on water conservation.