a wooden 'staircase'
(..) Dialogue: Marked=..,Default,NTP,!Effect,The staircases change, remember? Dialogue: Marked=..,Default,NTP,!Effect,-Let's go this way.\N-Before the staircase moves again. Dialogue: Marked=..,Default,NTP,!Effect,Does anybody feel like\Nwe shouldn't be here? (..)2001 Harry Potter and the Sorcerer's Stone