This is another large dam. With the 2nd largest single lock in the world....I think Wilson Dam The lock was closing as I ran to try to git a shot of a boat leaving it. I've locked through many times and let me tell you. When your at the bottom of the lock in a 12' flat bottom boat you feel like the smallest thing on earth. After 9-11 they closed the dams visitor center that let you walk all around the top of the lock. I loved going to the end of the lock and spitting just to see how many seconds it took to hit the water. Four or five best I can remember.