Keystone retaining walls are a type of retaining wall system constructed using interlocking concrete units called “keystones.” These keystone blocks have a trapezoidal shape with a built-in lip and pin system that allows them to fit together securely. Keystone walls rely on a gravity-based design for stability. They are engineered to withstand soil pressures and various loads, providing an excellent choice for retaining walls. Keystone retaining walls offer flexibility in design, accommodating both straight and curved wall configurations. They provide efficient drainage and prevent water buildup behind the wall. Keystone walls are known for their durability, stability, and aesthetic options, making them a popular choice for residential, commercial, and public applications.