Proxima Centauri d

Proxima Centauri d was relatively inhospitable to human life.

Proxima Centauri d was a large Hycean world in the Proxima Centauri system. It was a brown-tinged world, covered in polluted sulfurous water oceans and massive oil glaciers which floated about pointlessly across the totally oceanic surface. It was the site of Test Base 6, which was Rotten.