Lake Winnebago, the largest freshwater lake in Wisconsin and a major recreation area, is featured in this southwest-looking, low-oblique photograph. More than 30 miles (48 kilometers) long and 10 miles (16 kilometers) at its widest point, Lake Winnebago comprises 215 square miles (557 square kilometers). The lake, part of a water route between the Great Lakes and the Mississippi River, is drained at its north end (bottom center of photograph) by the Fox River. Two major resort cities border the lake—Fond du Lac at the south end and Oshkosh on the west-central shore. Both cities are commercial and industrial centers. Other lakes visible include Butte des Morts and larger Poygan west-northwest of Oshkosh; west of Fond du Lac (upper right) are Rush, Green, and Puckaway.