This panoramic view shows the intersection of the Smoketown road and the Hagerstown turnpike from the 'bowl' that exists between the high ground of the Dunker Church plateau and the higher ground to the north. The 'bowl' is actually the eastern portion of a ravine which cut thorough the woods (clearly visible in the 3D picture). Just as the high ground outside the woods gave the Confederates advantage over the attacking Federals, this ravine allowed the Confederates to advance unseen onto the left and rear of Sedgwick's division, precipitating the Union disaster in the West Woods. Taken completely by surprise, Sedgwick lost about 2,000 casualties in less than 20 minutes, completely shattering Union morale on the right wing. From his vantage point at the Pry House, General McClellan would be hard pressed to over-estimate Confederate strength in the West Woods: a fresh division goes in and is instantly eaten up. In reality, the repulse of Sedgwick is not due to overwhelming Confederate numbers, but rather a very timely arrival of Confederate reinforcements at exactly the right place at the right time, and some very agreeable terrain from which to launch a surprise attack.