Chiron TL-34 is a somewhat crappy map with green time-machines but is useless because you cannot prevent your own death. There has been rumors that a Spartan-III invited Cortana using the green shit to confuse and try to rape her but she was able to teleport onto reach where MC felt a headache and was raped by cortana's suductive ways. You can also just select a less crappier map in the menu. Chiron-TL-34 is the most confusing map in all the Halo games beacuse it has 20 teleporters that lead all over the place. Apparently Chiron is located on Mars, and 3 + 4 = 7 so Bungie is using it to hyponotise players.