Gabions
In July 1953, a massive slide resulted in extensive damage to Old Fall River Road, which was nearly abandoned. In response to wide public interest, the National Park Service reopened the road. To limit damage and reduce repair time, during recosntruction and repair in 1967, gabions were installed in two locations where slides are frequent.
from Wikipedia: :Gabions (from Italian gabbione meaning "big cage"; from Italian gabbia and Latin cavea meaning "cage") are cages, cylinders, or boxes filled with soil or sand that are used in civil engineering, road building, and military applications. For erosion control caged riprap is used. For dams or foundation construction, cylindrical metal structures are used. In a military context, earth or sand-filled gabions are used to protect artillery crews from enemy fire."
In this application, the gabions are secured in place and filled with rocks.
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