Karesansui landscape stones

Quick answer：

Karesansui, also known as dry landscape or Zen garden, is a traditional Japanese garden design that uses carefully arranged rocks, sand, and sometimes gravel to represent a natural landscape. Landscape stones, or karesansui stones, are a key element in this design, symbolizing mountains and other natural features. They are typically selected for their shape, size, and the way they interact with the other elements in the garden.