Bonneville Landslide–Bridge of the Gods
This map depicts the Bonneville landslide in the Columbia River Gorge—hundreds of years ago, an entire hillside along the Columbia River collapsed in a massive landslide covering an area of about six square miles. The Bonneville landslide was so huge that it created a natural dam in the Columbia River, forming a temporary lake stretching all the way to Wallula Gap, 150 miles upriver. The deposit is known as the “Bridge of the Gods”, because it temporarily connected the land on both sides of the Columbia River. Made for the Washington Geological Survey.