Photo 1217Photograph detailA zig-zaggy boardwalk leads to the Environmental Education Center in Alviso, California.LocationAlviso Salt Marshes, Don Edward San Francisco Bay National Wildlife RefugeTaken2010-08-16 10:30:50CategoriesLandscapesFlowers / Plants / FungusStructuresDimensions3072 × 2048 pixelsHigh-resolution downloadLicenseCreative Commons Attribution 3.0 United States License