Which paragraph would best set the mood for a story about three friends who are camping in the haunted woods?

What does this excerpt explain about this setting

It is clearly expressed. what does that mean?

"the only completely stationary object in the room was an enormous couch on which two young women were buoyed up as though upon an anchored balloon. they were both in white and their dresses were rippling and fluttering as if they had just been blown back in after a short flight around the house."