Teleporter

Halo's surface is littered with small teleporters which allow for instantaneous transport over short distances to another teleporter or a teleporter exit point. Although they act similarly to Halo's teleportation grid, they are unable to transport over long distances. In Multiplayer, these are seen on levels such as Blood Gulch and Beaver Creek. However, in multiplayer, teleporters can be found on Earth. It is unknown how Forerunner technology ended up on modern-day Earth.

In Halo 3, teleporters were not present in any multiplayer map because Bungie thought it was too easy to "camp" near them and get easy kills. Despite this, teleporters were reintroduced in the recently released map Avalanche. However, teleporters are available in Forge for all the Halo 3 maps.

List of Maps with Teleporters
Halo: CE:
 * Battle Creek
 * Bloodgulch
 * Boarding Action
 * Chill Out
 * Chiron TL-34
 * Damnation
 * Danger Canyon
 * Death Island
 * Derelict
 * Geyphrophobia
 * Ice Fields
 * Infinity
 * Rat Race
 * Sidewinder
 * Wizard

Halo 2:
 * Beaver Creek
 * Coagulation
 * Containment
 * Gemini
 * Headlong
 * Relic
 * Warlock
 * Waterworks

Halo 3:
 * Avalanche
 * Cold Storage

Note: future Halo 3 maps may feature teleporters.

Trivia

 * It is unlikely to be canon, since it was never mentioned in either the campaign of the games or the novels.
 * In Halo 3, the teleporters only appear in Forge. However, Bungie provided the gamers with the Man Cannon, a different way of quickly going through the map.
 * The new legendary Map Pack map Avalanche is the only Halo 3 map featuring teleporters without Forge until Cold Storage is released.
 * They are rumored to cause ghost appearances when overused.