On May 10, 1832, the construction of Fort Blue Mounds began with the help of the residents of Blue Mounds, led by the newly promoted Colonel Ebenezer Brigham. The fort was built a mile south of Eastern Mound on the highest part of the open prairie, allowing for a commanding view of the open country for miles. Those who defended the fort were able to see to the east, south, and west, with the mound bounding the northern side of the fort.