That Sweet Word: Liberty!

That Sweet Word Liberty Russian , translit.Eto sladkoye slovo svoboda is a 1973 Soviet drama film directed by Vytautas alakeviius. It was entered into the 8th Moscow International Film Festival where it won the Golden Prize. The film was shot in Chile shortly before 1973 Chilean coup dtat. The basis for the plot is a real story the escape from SanCarlos prison in Venezuela of three political prisoners Guillermo Garca Ponce, Pompeyo Mrquez and Teodoro Petkoff.

Some patriots that have gone underground try to figure a plan for their release. They buy a small shop opposite the prison in the name of Francisco and Maria Vardes. From its basement they plan to build a 90meter tunnel.Three years of enormous effort, deaths and nervous breakdowns are not spent in vain. The inmates run away, but while at large, the oldest of them, Senator Miguel Carrera suffers a heart failure. He dies in a safe house on the eve of a meeting with journalists. ........

Source: Wikipedia