|Former Residents||Vorzakh, Le-Matoran|
The Chute system was invented and put into practice soon after Turaga Dume was appointed leader of Metru Nui approximately 15,000 years ago. From its conception, the system was managed by the Le-Matoran, who controlled the Chutes from Chute Stations. The Chutes ranged over the entire island, and were used as efficient transport between the Metru.
The illegal activity of Disk Surfing in the Chutes sprang up, though Matoran who participated in it were rarely punished for it unless they disrupted others' work or sustained injuries that prevented them from working. This sport was especially popular with Le-Matoran, many of whom knew where the best Chute tracks could be found.
The Chute System became an essential part of the habitats of several species of Rahi. Chute Lurkers lived and hunted inside of the Chutes, and Nui-Rama often feed on the Liquid Protodermis contained within them. The Ko-Matoran Scholar Ihu was killed when a swarm of Nui-Rama attacked the Chute he was riding to feed on the Protodermis.
After the Toa Metru were branded as impostors by Makuta Teridax disguised as Turaga Dume, Vakama, Matau and Nokama fled from the Coliseum via a Chute headed towards Ko-Metru. In a main Chute Station, the Dark Hunters Nidhiki and Krekka forced the Chute Station Attendant Kongu to reverse the flow of the Chutes to endanger the Toa Metru. The Toa Metru were forced to manually evacuate the Chute, making use of Nokama's Hydro Blades to latch onto one of the metal supports and swing themselves to safety.
Later, the same three Toa Metru were attacked by Vahki Bordakh. Matau allowed the Vahki to pursue him in a nearby Chute but noticed that a portion of the Chute ahead had been destroyed by Vahki Vorzakh. Thinking quickly, he hooked his Aero Slicers on one of the chute rings and stopped himself before he exited the Chute. The Vahki were unable to stop themselves in time, flying out of the Chute and crashing to the ground.
The Chute system was heavily damaged in the Great Cataclysm, but repaired after the Staff of Artakha was used.
Underwater Chutes connected Metru Nui with other locations in the Matoran Universe. These Chutes are all over Metru Nui, but they fell into disuse because they were considered unsafe, making them a very good way for different types of Rahi to travel, including the Visorak horde.
Toa Empire Alternate Universe
In this alternate universe, Toa Lesovikk and Takanuva used an underwater Chute to travel from Karzahni to Metru Nui.
The Chutes are made of magnetized Protodermis held in place by an electromagnetic sheath, causing them to flow at rapid speeds. The electromagnetic field pulses, weakening and strengthening every few seconds, allowing solid objects to pass through the chute's outer field at the right time. The field's strength can be altered, so as to make it weaker or stronger, at a chute station. Chutes can vary in size, from small one-Matoran chutes to huge cargo chutes.
Sometimes, when there is trouble in the Chutes, the Chute's speed is slowed or even stopped. Reversing it is believed by the workers to possibly cause the entire system to explode. Damaged Chutes were closed off to the public, and were often used illegally, until the Chute's condition was normalized.
The most common way to board a Chute was from Chute Stations. At a chute station, the Protodermis flow was slowed down and the magnetic field was weakened enough for Matoran to pass through easily, allowing them to enter and exit the Chute, or load or unload cargo. In order to reach the boarding platform of a Chute from ground level, a system of ladders was used. Thrill-seeking Matoran engaged in the illegal practice of Chute diving, which consisted of jumping into a Chute outside of a station, based on an estimation of when the field is weak enough. This was highly dangerous, as an incorrectly-timed jump could land the Matoran on a hard field, possibly knocking the Matoran off.
Occasionally, a flaw in a Chute System would cause a piece of the Chute's field to break off and wrap around itself, becoming a sphere of magnetic energy called a Force Sphere. Force Spheres traveled through Chutes at high speed, sucking in tools, bits of junk, Kanoka Disks, and other things. The longer the Sphere existed, the stronger it would become, until it caused the Chute it was traveling in to collapse. The Sphere would then implode under the wreckage, destroying its contents.
During the quest for the Great Disks, Matau had to retrieve Le-Metru's Great Disk from a Force Sphere. The Toa managed to create a tornado inside it to push himself out. After that, the Sphere destroyed the Notch.