Contact: Diana Lutz
Washington University in St. Louis
Caption: Low coefficients of friction in moving masses of rubble also might explain anomalous landslides on Earth, called sturtzstroms. One famous example is the prehistoric Blackhawk landslide; Rock falling from the San Bernardino mountains in California traveled an astonishing five miles into Lucerne Valley.
Credit: Kerry Sieh/USGS/public domain
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