7-17-18 Tuesday. We spent the entire day sailing upriver on the Danube. The main attraction was the Iron Gates, a stretch of the river through a gorge that had been whitewater before a dam was built downriver and is now deep and smooth enough to accommodate riverboats. One side is Serbia, the other Romania. Trajan’s (Roman emperor) Tablet, carved in stone commemorating the completion of a road was cut from the rock face of the gorge and moved up to its present location because it would have been covered by the new river height. Further along on the other side is a huge relief sculpture (like Mt. Rushmore) of the head of King Decabalus (ruled 84-106) carved in recent times. We transited a lock which we shared with other boats, passed several towns and another lock. On the trip from Constanza to Amsterdam the boat passes through 66 locks.