The other meat grinder which disappeared from history is Mga, south of Leningrad. It is on the main transportation lines from the German area and to Moscow. Units which were traveling to Leningrad met on the roads in Mga, beat themselves to pieces, and never went further. Commanders sent units to Leningrad, they never arrived, so they sent more to check on what happened.
Stalin had almost everyone involved with the Defense of Leningrad killed after the war. He always saw Leningrad as a threat to his power, too independent from Moscow.