False mountain and Japanese Zen rock garden

Quick answer：

False mountains, also known as artificial mountains, are landscape features designed to mimic natural mountains. They are commonly found in Chinese gardens, often used to represent mountains that cannot be seen in the surrounding area. Japanese Zen rock gardens, known as 'kare-sansui', are a form of Japanese rock garden that uses carefully placed stones to symbolize mountains, islands, and other natural elements. Both are artistic representations of nature, with false mountains often being part of a larger garden design and Zen rock gardens focusing on minimalism and spiritual contemplation.