What is the red light in The Hobbit by J.R.R Tolkien?

Answer 1

{| |- | The 'red light' appeared several times in The Hobbit. The first time it was the fire that the trolls were sitting around. The next red light was the fires of the Goblins under the mountain. Another was Smaug, the dragon. And red light came out of the eyes of the dwarves being led by Thorin in the Battle of the Five Armies. |}