Karesansui, also known as Zen rock garden, is a traditional Japanese landscape garden that emphasizes the natural simplicity of rocks, raked gravel, and often a single, carefully placed tree. The effect aims to create a minimalist representation of natural landscapes, particularly mountains, through carefully arranged stones and the use of white sand or gravel raked in patterns to symbolize water. It is a key element in Japanese Zen Buddhism and reflects the principles of wabi-sabi, which values imperfection and the natural process of aging.