Steel Rebar. Reinforcing bar, or rebar, is a common steel bar that is hot rolled and is used widely in the construction industry, especially for concrete reinforcement.
These flows generally occur during periods of intense rainfall or rapid snow melt. They usually start on steep hillsides as shallow landslides that liquefy and accelerate to speeds that are typically about 10 miles per hour, but can exceed 35 miles per hour. The consistency of debris flows ranges from watery mud to thick, rocky mud that can carry large items such as boulders, trees, and cars.
And despite most landslides needing a slope to move down, there is one type of landslide that can move sideways. That's a lateral spread or flow landslide and it can happen when an earthquake moves the soil material as though it were a liquid. One very dramatic type of landslide is a lahar.