Rock walls have been installed for many years throughout the Northwest. They have proven to be a great solution to challenging elevation changes, creating more usable space, and erosion control. Boulder walls can be engineered up to 18’ in height by a licensed professional engineer. They are free draining, and the actual mass of each individual boulder is the integral part in the gravity boulder retaining wall. Also, it’s very aesthetically pleasing and ages well with the surrounding environments. Rock walls have proven they can survive adverse conditions and out last other common practices in the industry.