The Ferguson landslide, also commonly called the Ferguson Slide, is an active landslide in the Merced River canyon in the U.S. state of California which in 2006 blocked a primary access road to Yosemite National Park. The slide still blocked the original road as of early 2016, although temporary bridges allow one-way traffic around the slide and into the park. The slide is a natural phenomenon, and resulted from the erosion dynamics of the river valley. The temporary bridges access a road grade, on the north side of the river, which is a vestige of the Yosemite Valley Railroad.