The Border along Berlin’s Spree River (no date)
The border between the districts of Kreuzberg (West Berlin) and Friedrichshain (East Berlin) ran along the Spree River. Although East Berlin controlled the entire width of the Spree at this point, the Wall occupied the river's eastern bank. Patrol boats, underwater chain-link fences, and ship barricades were used to create a water border with West Berlin, since boaters, swimmers, and scuba divers tried time and again to reach the West via the Spree. Photos by Klaus Lehnartz.