The term "in-ground" refers to something that is installed or situated below the surface of the ground. This can apply to various objects, such as swimming pools, sprinkler systems, or planters. In-ground installations are often designed for durability and can enhance the functionality or aesthetics of outdoor spaces. In-ground structures typically require excavation and careful planning to ensure proper placement and drainage. For example, an in-ground pool involves digging a large hole, installing the pool structure, and then filling in around it to create a seamless look with the surrounding landscape.