Spinning tunnel

Spinning tunnels—which are also known as vortex[1] tunnels or rotating tunnels—are devices used at haunted attractions and amusement parks.

When people walk through the center of a spinning tunnel they can experience vertigo and a loss of equilibrium as their brains receive conflicting signals from their bodies and senses.

Laser tunnels that can be contained in a domed enclosure are favored by the home haunting industry.

Made from parts acquired at local hardware or discount department store, the tunnels are built using LEDs, incandescent or fluorescent lights, blacklights or lasers—or any combination thereof—paired up with a laser vortex.

The bridges or walkways can be designed to tilt, wobble or vibrate as visitors proceed along the path, providing unstable footing and causing a further loss of balance.

[3] The rotating tunnel consists of a cylinder made of large rings secured together by trusses, rods, or braces.

One of the wheels is connected by a belt or chain to an AC motor which drives the cylinder at a rate of 4–10 revolutions per minute (rpm).

The tunnel is lined with fabric or plastic sheeting that has been painted or imprinted with various designs or images.

Handrails line the bridge to keep patrons from falling off the sides into the rotating tube, preventing injury to themselves or damage to the tunnel.

[8] There is the base or framework, the tunnel, the drive mechanism, the lighting system, and the bridge or walkway.

The vertical rings are connected to horizontal braces forming a cylinder similar in shape to a large coffee can with the ends removed.

The use of fluorescent inks or paint and black lighting can add to the enjoyment of the attraction by creating a spooky, darkly lit environment.

[8][13] The ends of the tunnel need to be enclosed to prevent light entering and to help control the flow of patrons through the attraction.

Instead of the tunnel spinning around the bridge, LEDs that are embedded in the walls of the tube are programmed to turn on and off in sequence, presenting the illusion of movement.