Steam Vents, also known as Air Vents or Vents, are a type of machine that continuously blows out an upward stream of white steam into the air. Some vents can be activated by Valves. Alice Liddell is able to use the vents to aid in jumping and floating from platform to platform. It uses her skirt as a parachute to catch the steam and the up-drift will carry her and hold her up there until she is ready to jump off.