This video shows you various techniques for stabilizing a hillside.
With the weather coming this is absolutely essential for those living near, or on, a hill - especially in areas that experience high rains or live on hills that are prone to sliding.
When I was a child I watched hill side after hillside slide in the San Francisco Bay Area taking homes with them.
In almost every case the Mud Slide could have been prevented using these techniques.
How To Stabilize A Hillside - YouTube
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Dr William B. Mount