The monument is in a transition zone of several vegetation communities. The monument was created from the acquisition of private land that had been farmed and logged altering the native vegetation mosaic. Results of monument vegetation surveys combined with information from federal land surveys show that a mosaic of forest, savanna, and prairie covered the monument. Prairie and savanna dominated ridges and south facing slopes. Forests pockets were likely found on north facing slopes and in the river floodplain.
Did You Know?
Effigy Mounds National Monument is located in territory that was hotly contested by Indians and the American government. In 1832, the U.S. forced the Sauk and Fox tribes to cede land south of the “Neutral Ground” along the Mississippi River, which included the lands of the present National Monument.