It was encased inside a large gas cloud that extended much further outward from the planet than a standard atmosphere. Its contents were poisonous to Human life. It was more dense at the surface, providing illumination and retaining heat. An amorphous black membrane would form within the cloud to surround any sources of external power, but not biological or kinetic energy sources. It could be sliced by an autoknife or penetrated by meteoroids, but gaps resealed quickly.
Despite their resemblance to Earth-type trees and jungles, the foliage did not produce oxygen. Plants absorbed nutrients directly from the atmosphere and produced a type of energy that could be harnessed.
In 2266, Captain James T. Kirk and Spock explored the surface after the USS Enterprise was caught within the gas cloud. David Bailey and Hikaru Sulu piloted the Galileo to the surface and used the shuttlecraft's phasers to clear meteor debris away from a Kalin city. A contingent of Balants also attempted to commandeer the Enterprise. (TOS comic: "Skin Deep")
Points of interest
- Kalin city