“A massive mudslide along the California coast. Millions tons of rock/dirt, about 1/3 mile of roadway covered 35-40 feet deep.”
A steep slope, unstable ground, and changing moisture content result is this spectacular (and horrifying) example of how the Earth beneath our feet might not be as permanent as we expect it to be.
Questions to Ponder: Which type of mass wasting is seen in this particular example? What conditions would lead to other types of mass wasting?