|This article (The Pillar of Autumn Vacation), has one or more disputed facts. Please visit this article's talk page for more info, and clean this page so it meets wiki standards.|
Through a glitch, the player can go through the glass of the airlocks that lead to the escape pod's of the UNSC Pillar of Autumn. After going through the hatchway by crouching and jumping you will fall. Upon reaching the invisible "floor" (a form of "invisible wall") you may lose some health. If it works correctly, you will be able to explore the underside of the UNSC Pillar of Autumn.
It has been discovered that the same glitch applies to the final airlock in the level. The effect, walls and area are the same but the end cutscene may stop you.
However, when outside the Pillar of Autumn, you can only explore a small part of the ship, and can only travel approximately 190 meters away from the ship before you reach an invisible wall. Also, when outside, there is no way to climb back in. This means the player has to revert to last checkpoint to get back inside.