Natural sinkhole used as a mass grave for Union soldiers killed in the fighting. An interpretive trail leads to the sinkhole from Bloody Hill
 
Photo courtesy of Dan McCormick, Las Vegas, NV

(7-95) Battlefield Tour Stop 8 (Historic Overlook: Route of Union Advance and Withdrawal), east view. 1995 Tour Guide: The Union army passed through this field both upon their advance to and retreat from Bloody Hill. To guard against Confederate attack, the 2d Missouri Infantry Regiment and DuBois' artillery were formed in line of battle in this area. The John Ray house is clearly visible to the southeast