From the pause menu, this position is in the lower right corner of the mini map. This sniping position gives you a full view of down the bridge to in front of the barn, and you can pick off anybody running across the bridge.
The spot is in a corner between two trees. It also has bushes that give you cover for your ghillie suit to aid you. If you move west slightly there's concrete blockades where you can snipe anyone coming from the other side of the map. To the right of the sniper spot. There's a house that you should place some claymores in so you don't get flanked.
