They didn’t bury them. They placed them on elevated platforms.
–source– the Lone Ranger, season 2, episode 14
Heh. 🙂
In truth, however, I wouldn’t be surprised if customs varied from tribe to tribe and region to region (i.e. in some places they buried, in others they left corpses for exposure and in other places, used other methods). However, even if you discount the indigenous Native Americans, there are certainly early European cemeteries that have been lost over time in the city.
The Wolf