What are the 3 dangers of the fire swamp?

Answer 1

Scene 5b: Though it's treated as the same scene in the movie, there's a distinct change in locale here, as Buttercup and Westley flee into the dreaded Fire Swamp. While explaining how he became the Dread Pirate Roberts, they encounter the three dangers of the Fire Swamp--the flame spurt, the lightning sand, and the Rodents of Unusual Size.

Princess Bride, great movie.