...he ground on the left of Birney's division was so broken and obstructed by boulders that his left was dropped off to the rear, forming a broken line. In rear of the enemy, and between his lines and Little Round Top , was a very rough elevation of eighty feet formed by upheavals that left open passage deep down Devil's Den. Smith's battery was on Birney's left, Winslow's between the right and next brigade. Othe...