What can we learn from engines? Ep.1- Fortresses

After drawing Scott (@ScottLiu1223) in a tournament today, I went over and checked stockfish. Depressed because I was 1700 and Scott wasn't, I went on to watch one of the most instructional games I've seen, played by none other than Stockfish itself. here it is:

Near the end of the game, black had a practical fortress- the 3300 rated stockfish couldn't find a way to break through. 

[In progress]