Sully's Heart River Corral State Historic Site [ND]
This site marks a base camp established by General Alfred Sully during his 1864 campaign. Rifle pits were dug around the circled wagons but the camp was never attacked; many of the rifle pits are still visible. There is a marker on the site.
The site is open to the public.
Website does not specify any interpretive services available at the site.