There were many valleys in the mountains of Afghanistan, and most were hard places where people died hard deaths. But there was only one Valley. Black didn't even know its proper name. But he knew about the Valley. It was the farthest, and the hardest, and the worst. It lay deeper and higher in the mountains than any other place Americans had ventured. You had to travel through a network of interlinked valleys, past all the other remote American outposts, just to get to its mouth. Stories circulated periodically, tales of land claimed and fought for, or lost and overrun, new attempts made or turned back, outposts abandoned and reclaimed. They were impossible to verify. Everything about the Valley was myth and rumor. The strung-out platoon Black finds after traveling deep into the heart of the Valley, and the illumination of the dark secrets accumulated during month after month fighting and dying in defense of an indefensible piece of land, provide a shattering portrait of men at war.