Mods used: Infinite Nudge

The chamber itself is a 16-entrance cannon, not including the entrance at the back used to enter it. It's at a 30 degree angle and can take you from sea level to well above the red woods in terms of height while easily crossing most of the map with careful jetpack fluttering.

The whole thing fits within a mk2 blueprint machine. A full 20m long, but the foundation base is only 11m wide making it, I feel, fairly compact (for a decorated hyper cannon).