History can be tricky. Here's another monument founded on bones.
This obelisk commemorates the mass grave of 1200 Northwest War veterans at Fort Recovery, Ohio. Well, it commemorates St. Clair's Defeat, but it is not clear to me that a mass grave excavation actually took place in 1891. It goes unnoticed by Google, and the monument is actually pretty typical of its genre. Here's the one at (if I have the spelling right) Fort Amanadou, Ohio.
President McKinley seems to have enjoyed erecting obelisks in Ohio. It is not even clear where the remains are. William Henry Smith says that they were collected on the battlefield by General James Wilkinson in 1793 and removed. As industrious as General Wilkinson was in everything he did (war, treason, corruption, farming, other related hobbies), it is not likely that he managed to collect the bones that would have been left by 1200 bodies. So there might have been more to be interred --perhaps at this mass grave. There's something a little fishy about St. Clair's Defeat. Not terribly surprising, given how hard people have been working to lose the history of these times.