Puget Sound Landslides - Photographs and detailed descriptions of several areas prone to landslides. Mount St. Helens, Washington: Mudflows and Lahar Images 1980-2004 - Cascade Volcano Observatory photograph archive. When Rivers of Rock Flow - Article from the Earth Observatory about the rivers of rock and water that overwhelmed a village on the slopes of Mt. Pinatubo in the Philippines in 1994. USGS: Landslide Hazards Program - Responsible for reporting and researching landslides. Haneberg Geoscience - Consulting services in engineering geology, hydrogeology, and applied geomechanics. Research abstracts on landslides and related geologic hazards. Port Orchard, Washington. Potential San Francisco Bay Landslides During El Niño - Maps and fly-by movies available. Kelso, WA landslide - Site describing the second largest urban landslide in US history. Papers, photos, links, and a discussion group. Landslides and Avalanches - Descriptive directory of some online resources, maintained by the University of Colorado. SHALSTAB - A Digital Terrain Model for Mapping Shallow Landslide Potential - Technical report on, and free download of, a very simple model for mapping shallow landslide potential. Pyroclastic Flow - Article from Wikipedia on this fast-moving torrent of hot gas and rock which can travel down the slopes of a volcano at great speed. Volcanology - Photographs and information on debris avalanches, mudflows, ash deposits and pyroclastic flows. Geomorphology Research Group at CNR IRPI - Team of geologists, engineers and physicists interested in landslides, landslide hazards and the definition of the associated risk. Mt. St. Helens Dam Holds Mud off Cities - Article from Around the Nation warning of the possible dangers to cities downstream from the mountain.