|Vlook||Energy Flow Systems||West|
|Burrh||Regulation Control Center||South|
|Sorra||Neutrino Burst Injector||East|
|Teln||Brownian Motion Inducer||North|
All four of these levels are much longer than they are tall, in keeping with the tunnel theme. All use the song Be Sphereful With My Diamonds. It seems, that the words "Vlook","Burrh","Sorra" and "Teln" are alien words for cardinal directions. In the world map they are labeled with "DT" in SGA from two directions.