That narrow area between the wood fence post is the infamous Sunken Road, as it was known before the battle. It got its name because it wore down from wagons travel loaded down with goods, headed to the rail stations.
During the battle, approximately 2,600 confederates were waiting on the road for the union army to advance. Later that morning, about 9:30, 5,500 union troops made their way across a cornfield in front of the sunken road, the high corn blocking their vision.
Less than a 100 feet before the road, the Confederates opened up on them and the four-hour struggle was on. The Confederates badly outnumbered and under heavy cannon fire, held the road until the next morning. 5,500 soldiers were killed or wounded and neither side gained a decisive advantage.
The yellow house towards the end was one of Gen. McClellan’s headquarters during the battle.
The Irish Brigade has a monument at the time of Bloody Lane (The sunken road) The brigade made a head-on charge at the Confederate lines several times, for the sole purpose of knocking down the enemy’s defensive works so that the rest of the Union forces wouldn’t be cut down going over the defense work during the main charge.
In one day, 22,000 men were killed or wounded at the battle. Most of them around the sunken road (although the battlefield is several miles long)