In the heated discussion between Thranduil and Thorin, for a moment, Thranduil's face suddenly turn very deeply scarred and wounded & immediately returns to normal. What was it about? Is it a reference to anything that was cut out of the movies? (I have not read the books sadly, but am very curious about this). ![This face][1] [1]: https://i.sstatic.net/O08e5.png