In terms of the number of people, what was the single biggest escape from East Berlin?

The Berlin Wall was erected in 1961 with the purpose of preventing any immigration and defection from East Germany to West Germany and in its lifetime saw approximately 5,000 people attempt escapes over, or under it. The death toll ranges from 136 to more than 200 people in and around Berlin. Some of these escape attempts were incredibly creative.

During the nights of October 3rd and 4th, 1964, the largest mass escape of East Berlin was conducted with 57 people managing to escape through a tunnel underneath an apartment block in Strelitzer Straße. The tunnel itself was two feet high and three feet wide, and the people making the leap could not bring any baggage or belongings with them, only their papers. They came out on Bernauer Straße, underneath a disused bakery in West Berlin.