Legendary Chilean director Patricio Guzman's latest film focuses on the ocean:  Water, the longest border in Chile, also holds the secret of a mysterious button that was discovered in its seabed. Chile, with its 2,670 miles of coastline, the largest archipelago in the world, presents a supernatural landscape. In it are volcanoes, mountains and glaciers. In it are the voices of the Patagonian indigenous people, of the first English sailors and also those of its political prisoners. 

Miami: April 19 at MDC Tower Theater.