We drove all the way to the very southern terminus of US-421 at a place referred to as "The Rocks." There is a neat "Begin US-421" sign there. US-421 is a spur of US-21 and runs 941 miles from Michigan City, Indiana, (where the fated SS Eastland was heading for a company picnic when it capsized in the worst tragedies in Chicago history). It goes through such cities as Indianapolis, Lexington (Ky), and Winston-Salem, Greensboro and Wilmington in North Carolina.
"The Rocks" was built in the 1880s in a line from the end of what is called Federal Point (during the Civil War, it was renamed Confederate Point) to Zeke's Island.as a way to close off New Inlet for navigation. It was, and still is, quite an engineering feat.