The Detroit River represents the border between Ontario, Canada and the United States and is one of the busiest waterways in the world. Each day, freighters use the river to transport iron ore from Michigan's upper peninsula to the bustling automobile factories in Detroit, while barges pass through the waterway to carry timber from Michigan and Wisconsin to Cleveland, Buffalo and Toledo. During Prohibition, the Detroit River represented one of the largest thoroughfares for the importation of illicit liquor into the United States. "With the Detroit River less than a mile across in some places, and 28 miles long with thousands of coves and hiding places along the shore and among the islands, it was a smugglers dream," says Jenny Nolan of The Detroit News. "Along with Lake St. Clair and the St. Clair River, these waterways carried 75 percent of the liquor supplied to the United States during Prohibition."