When Marriott need to reduce impact into the wetlands and create a visual element for both the guests sitting by the pool and those looking at the pool area they wanted to make sure the product they used met their needs. GravityStone MSE utilizing a reversible alignment plug provides the means to adjust batter from .5 – 4.5 degrees. With the Rap’s placement on the quarter point of the straight lines and smooth corners can both be achieved. GravityStone MSE is a great solution for fill walls.