(Arkansas)
Poison Springs Battleground State Park is an Arkansas state park located southeast of Bluff City. It commemorates the Battle of Poison Spring in the American Civil War, which was part of the 1864 Camden Expedition, an element of a Union Army initiative to gain control of Shreveport, Louisiana and get a foothold in Texas. (Ref: https://en.wikipedia.org/wiki/Poison_Springs_Battleground_State_Park)