Jay Patel of Mumbai, India, joined Caroline and me on a cross-country road trip in May 2004. We spent some time up in the Tetons and Yellowstone National Parks before making our first visit to the Theodore Roosevelt National Park in North Dakota. In Minnesota, we dipped our toes into Voyageurs National Park and walked barefoot through the headwaters of the great Mississippi River at Lake Itasca. On our way home, while moving down the path of the Mississippi, we took in Effigy Mounds National Monument in Iowa, that’s where today’s photo of the day came from. The image was taken on May 21, 2004.