Roadside Geology of Washington

Washington is alive with geologic activity: It's home to the most active volcanoes in the lower 48, earthquakes regularly rattle the populated Puget Sound region, the potential of landslides increases with each soaking rain, and tsunami evacuation routes alert tourists in Olympic National Park to the active plate boundary just off the coast. The only geologic hazard Washingtonians need not fear, at least not with the continued trend of global warming, is another Ice Age flood. More than for...