In May 1858, proslavery men gunned down 11 free-state men in a ravine that is now an important landmark. The shootings shocked the nation and became a pivotal event in the Bleeding Kansas era. A few months later, abolitionist John Brown came to this site on a military trail to build a fort. Take a drive through this now beautiful natural setting and experience the site through outdoor exhibits. Designated a National Historic Landmark in 1974.