1. Enter the geodesic dome on altis, located between 173132 and 174132.
2. Walk up the stairs and stand on the top of the central biohazard containment building.
3. Look up and down and around at the walls. You may see your screen flash blue. A certain section (the circle created by an intersecting plane) of the building (near the windows) there is a height that makes the entire dome will disappear while being looked at. If you can find that plane and keep your view on it, the whole dome will become invisible.